good article infobox rubidiumRubidium IPAc en icon r b d i m respell roo BID ee m is a chemical element with the symbol Rb and atomic number 37. Rubidium is a soft, silvery white metallic element of the alkali metal group, with an atomic mass of 85.4678. Elemental rubidium is highly reactive ... oxidation in Earth s atmosphere air . Rubidium has only one stable isotope, sup 85 sup Rb, with the isotope sup 87 sup Rb, which composes almost 28 of naturally occurring rubidium, being slightly radioactive ... age of the universe . German chemists Robert Bunsen and Gustav Kirchhoff discovered rubidium in 1861 ... . Rubidium s compounds have various chemical and electronic applications. Rubidium metal is easily ... manipulation of atom s. Rubidium is not known to be necessary for any organism living organisms . However, like caesium , rubidium ions are handled by living organisms in a manner similar to potassium ions, being actively taken up by plant s and by animal cell s. Characteristics Rubidium is a very ... C F . Similar to other alkali metals, rubidium metal reacts violently with water, forms amalgam chemistry ... , but not lithium despite the fact that rubidium and lithium are in the same group . ref name ... reactive , rubidium s reaction with water is usually vigorous enough to ignite the hydrogen gas it liberates. Rubidium has also been reported to ignite spontaneously in air. ref name Ohly cite book chapter Rubidium title Analysis, detection and commercial value of the rare metals last Ohly first Julius publisher Mining Science Pub. Co. year 1910 url http books.google.com ?id dGUuAQAAIAAJ ref Rubidium ... 21 ref Rubidium and potassium show a very similar violet color in the flame test , which makes spectroscopy methods necessary to distinguish the two elements. As a symmetrical effect of rubidium metal s high reactivity toward oxidation and tendency to subsequent formation of the rubidium cation Rb sup ... http books.google.de books?id mDXzAAAAMAAJ&q Rubidium coordination&dq Rubidium coordination&hl ... more details
saved book title Rubidium subtitle An overview cover image Rb5.JPG cover color Rubidium An overview Overview Rubidium Isotopes Isotopes of rubidium Miscellany Category Wikipedia books on chemical elements Category Rubidium Wikipedia books on elements ... more details
chembox verifiedrevid 445121216 IUPACName Rubidium hydroxide OtherNames Section1 Chembox Identifiers ... Rubidium oxide Rubidium hydroxide RbOH is a strong Base chemistry basic chemical and alkali that is formed by one rubidium ion and one hydroxide ion. Rubidium hydroxide does not appear in nature. However it can be obtained by Chemical synthesis synthesis from rubidium oxide . In addition, rubidium hydroxide is commercially available in form of an aqueous solution from a few suppliers. Rubidium ... are required when handling this material. Synthesis Rubidium hydroxide can be synthesized from rubidium oxide by dissolving the oxide into water Rb sub 2 sub O s H sub 2 sub O l 2 RbOH aq Rubidium ... or 99 water aqueous solution at multiples of 5 gram g . Uses Rubidium hydroxide is rarely used in industrial ... functions of rubidium hydroxide in a less violent and hence safer way. Rubidium hydroxide ... rubidium . Despite the fact that rubidium hydroxide is rarely used in normal industrial processes, it is notable that the synthesis of nearly all rubidium compounds involves rubidium hydroxide as an intermediate. Natural rubidium oxide is added to water, and the resulting reaction forms soluble rubidium hydroxide as a product. Hazard prevention Rubidium hydroxide is a corrosive compound that causes ... alkali resistant materials are to be worn to prevent injury caused by accidental leakage of rubidium ... Rubidium References reflist cite web url http www.webelements.com compounds rubidium dirubidium oxide.html title Rubidium compounds dirubidium oxide work WebElements the periodic table on the web publisher ... title Rubidium hydroxide work ChemExper Chemical Directory catalog of chemicals and suppliers publisher ChemExper accessdate 16 November 2011 Rubidium compounds DEFAULTSORT Rubidium Hydroxide Category Rubidium compounds Category Hydroxides Category Bases cs Hydroxid rubidn de Rubidiumhydroxid ... rubidu pt Hidr xido de rub dio ru simple Rubidium hydroxide sv Rubidiumhydroxid ... more details
A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine level hyperfine transition of electron s in rubidium 87 atoms is used to control the output frequency. It is the most inexpensive, compact, and widely used type of atomic clock , used to control the frequency of television station s, cellular base station cell phone base stations , in test equipment, and global navigation satellite system s like Global Positioning System GPS . Commercial rubidium clocks are less accurate than Cesium clock cesium atomic clock s which serve as Primary standard primary frequency standards , so the rubidium clock is a secondary frequency standard . However, rubidium fountains are currently being developed that are even more stable than caesium fountain clocks. All commercial rubidium frequency standards operate by disciplining a crystal oscillator to the rubidium hyperfine transition of 6 834 682 610.904 324 Hz. The amount of light from a rubidium discharge lamp that reaches a photodetector through a resonance cell will drop by about 0.1 when the rubidium vapor in the resonance cell is exposed to microwave power near the transition frequency . The crystal oscillator is stabilized to the rubidium transition by detecting the light dip while sweeping an Radio frequency RF frequency synthesizer synthesizer referenced to the crystal through the transition frequency. See also Atomic clock Caesium standard Hydrogen maser References NIST PD http tf.nist.gov general enc re.htm resonancefrequency FS1037C External links http tf.nist.gov general enc re.htm resonancefrequency NIST Time & Frequency A Z Glossary Resonance Frequency http ... USNO Rubidium Fountain Project http www.npl.co.uk science technology time frequency microwave frequency standards research rb fountain NPL Rubidium Fountain Category Electronics standards Category Clocks Category Rubidium physics stub hu Rub diumoszcill tor ... more details
chembox verifiedrevid 447547828 ImageFile Rubidium fluoride 3D ionic.png ImageSize 150px ImageName Rubidium fluoride IUPACName Rubidium fluoride OtherNames Rubidium I Fluoride Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 75311 InChI 1 FH.Rb h1H q 1 p 1 InChIKey AHLATJUETSFVIM REWHXWOFAO SMILES Rb . F StdInChI Ref stdinchicite correct chemspider StdInChI 1S FH.Rb h1H q 1 p 1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey AHLATJUETSFVIM UHFFFAOYSA M CASNo 13446 74 7 CASNo Ref cascite correct CAS PubChem 83473 RTECS VL8740000 Section2 Chembox Properties Formula RbF MolarMass 104.4662 g mol Appearance white crystalline solid Density 3.557 g cm sup 3 sup MeltingPt 795 C 1068 K BoilingPt 1408 C 1681 K Solubility 130.6 g 100 mL 18 C Section7 Chembox Hazards ExternalMSDS EUIndex Not listed MainHazards Toxic RPhrases SPhrases FlashPt Non flammable Section8 Chembox Related OtherAnions Rubidium chloride br Rubidium bromide br Rubidium iodide OtherCations Lithium fluoride br Sodium fluoride br Potassium fluoride br Caesium fluoride Rubidium fluoride RbF is the fluoride salt of rubidium . It is an octahedral crystal . There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide with hydrofluoric acid RbOH HF RbF H sub 2 sub O Another method is to neutralize rubidium carbonate with hydrofluoric acid Rb sub 2 sub CO sub 3 sub 2HF 2RbF H sub 2 sub O CO sub 2 sub The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogen s 2Rb F sub 2 sub 2RbF References reflist cite web url http www.webelements.com compounds rubidiumrubidium fluoride.html title Rubidium compounds rubidium fluoride work WebElements the periodic table on the web publisher WebElements accessdate 16 November 2011 Rubidium compounds DEFAULTSORT Rubidium Fluoride Category Rubidium compounds Category Fluorides Category Alkali metal fluorides ... more details
chembox verifiedrevid 414434233 Reference ref name hand Citation last Lide first David R. year 1998 title Handbook of Chemistry and Physics edition 87 publication place Boca Raton, FL publisher CRC Press isbn 0 8493 0594 2 pages 4 79 ref IUPACName Rubidium hydride OtherNames Rubidium I hydride ImageFile NaCl polyhedra.png Section1 Chembox Identifiers CASNo 13446 75 8 PubChem 171411 InChI 1S Rb.H q 1 1 SMILES H . Rb Section2 Chembox Properties Formula RbH MolarMass 86.476 g mol Appearance white Cubic crystal system cubic crystals Density 2.60 g cm sup 3 sup MeltingPt Decomposes at 170 C Solubility reacts Section3 Chembox Structure CrystalStruct Cubic crystal system cubic , Pearson symbol cF8 SpaceGroup Fm u style text decoration overline 3 u m, No. 225 Section4 Chembox Thermochemistry DeltaHf 52.3 kJ mol DeltaHc Entropy HeatCapacity Section8 Chembox Related OtherAnions Rubidium oxide br Rubidium chloride OtherCations Lithium hydride br Sodium hydride br Potassium hydride Rubidium hydride is the hydride of rubidium . It is synthesized using rubidium metal to react with hydrogen gas. As a hydride of an alkali metal , it is reactive towards even weak oxidizing agent s. A redox reaction will occur with chlorine or fluorine and a lot of heat will evolve. Rubidium hydride will react violently with water or air and careful storage is necessary. References reflist Rubidium compounds Category Rubidium compounds Category Metal hydrides inorganic compound stub ar de Rubidiumhydrid fa ja ru simple Rubidium hydride uk zh ... more details
chembox verifiedrevid 447546883 ImageFile Rubidium bromide 3D ionic.png ImageSize 150px ImageName Rubidium bromide IUPACName Rubidium bromide OtherNames Rubidium I bromide Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 74217 InChI 1 BrH.Rb h1H q 1 p 1 InChIKey JAAGVIUFBAHDMA REWHXWOFAB SMILES Rb . Br StdInChI Ref stdinchicite correct chemspider StdInChI 1S BrH.Rb h1H q 1 p 1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey JAAGVIUFBAHDMA UHFFFAOYSA M CASNo 7789 39 1 CASNo Ref cascite correct CAS PubChem 4670918 Section2 Chembox Properties Formula RbBr MolarMass 165.372 g mol Appearance white crystalline solid Density 3.350 g cm sup 3 sup MeltingPtC 693 BoilingPtC 1340 Solubility 98 g 100 mL Section3 Chembox Hazards ExternalMSDS EUIndex Not listed RPhrases SPhrases FlashPt Non flammable Section8 Chembox Related OtherAnions Rubidium fluoride br Rubidium chloride br Rubidium iodide OtherCations Lithium bromide br Sodium bromide br Potassium bromide br Caesium bromide Rubidium bromide is the bromide of rubidium . It has a Sodium chloride NaCl crystal structure, with a lattice constant of 685 picometres. ref cite journal journal Phys. Rev. B volume 39 issue 17 pages 12838 12844 year 1989 author G. Chern, J. G. Skofronick, W. P. Brug ,S. A. Safron doi 10.1103 PhysRevB.39.12838 title Surface phonon modes of the RbBr 001 crystal surface by inelastic He atom scattering ref There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid RbOH HBr RbBr H sub 2 sub O Another method is to neutralize rubidium carbonate with hydrobromic acid Rb sub 2 sub CO sub 3 sub 2HBr 2RbBr H sub 2 sub O CO sub 2 sub Rubidium metal would react directly with bromine to form RbBr, but this is not a sensible production method since rubidium metal is substantially more expensive than the carbonate .... Rubidium compounds Category Rubidium compounds Category Bromides Category Alkali metal bromides ... more details
chembox verifiedrevid 444033680 Name Rubidium telluride ImageFile ImageSize ImageName OtherNames Section1 Chembox Identifiers CASNo Ref cascite correct ?? CASNo 12210 70 7 PubChem 82970 EINECS 235 388 2 InChI 1S 2Rb.Te SMILES Rb Te Rb Section2 Chembox Properties Formula Rb sub 2 sub Te Appearance yellow green powder MolarMass 298.64 g mol Density Solubility MeltingPt 775 C BoilingPt Rubidium telluride or Rb sub 2 sub Te is a chemical compound of the elements rubidium and tellurium . It is a difficult compound to synthesize this is in part due to the instability of the substance ref cite doi 10.1002 1521 3773 20020802 41 15 2725 AID ANIE2725 3.0.CO 2 G ref . Rubidium telluride is prepared from the elements in liquid ammonia . It is a yellow green powder that melts congruently at 775 C or 880 C as two different values are reported . This compound is very rare and there for are a limited number of suppliers. Pfaltz and Bauer sells Rb sub 2 sub Te for approximately 760 USD per gram 2010 . Rubidium telluride has found some uses as Ultraviolet UV detectors in space. References reflist External links cite doi 10.1007 s11669 997 0068 9 cite web url http www.webelements.com compounds rubidium dirubidium telluride.html title Rubidium compounds dirubidium telluride work WebElements the periodic table on the web publisher WebElements accessdate 17 November 2011 Rubidium compounds DEFAULTSORT Rubidium Telluride Category Tellurides Category Rubidium compounds fa zh ... more details
chembox verifiedrevid 401044846 ImageFile ImageSize IUPACName Rubidium carbonate OtherNames Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 10950 InChI 1 CH2O3.2Rb c2 1 3 4 h H2,2,3,4 q 2 1 p 2 InChIKey WPFGFHJALYCVMO NUQVWONBAM SMILES Rb . Rb . O C O O StdInChI Ref stdinchicite correct chemspider StdInChI 1S CH2O3.2Rb c2 1 3 4 h H2,2,3,4 q 2 1 p 2 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey WPFGFHJALYCVMO UHFFFAOYSA L CASNo 584 09 8 CASNo Ref cascite correct CAS PubChem 11431 RTECS FG0650000 Section2 Chembox Properties Formula Rb sub 2 sub CO sub 3 sub MolarMass 230.945 g mol Appearance White powder, br very hygroscopic Density MeltingPt 837 C ref Pradyot Patnaik. Handbook of Inorganic Chemicals . McGraw Hill, 2002, ISBN 0070494398 ref BoilingPt 900 C decomp Solubility Very soluble Section7 Chembox Hazards ExternalMSDS EUIndex Not listed MainHazards Irritant FlashPt Non flammable Section8 Chembox Related OtherCations Lithium carbonate br Sodium carbonate br Potassium carbonate br Caesium carbonate Rubidium carbonate , Rb sub 2 sub CO sub 3 sub , is a convenient compound of rubidium it is stable, not particularly reactive, and readily soluble in water, and is the form in which rubidium is usually sold. Preparation It can be prepared by adding ammonium carbonate to rubidium hydroxide . ref http www.1911encyclopedia.org Rubidium 1911encyclopedia.com ref Uses It is used in some kinds of glass making by enhancing stability and durability as well as reducing its conductivity. It is also used as a part of a catalyst for preparing short chain alcohols from feed gas. ref http patents1.ic.gc.ca claims?patent number 1258668&language X Canada Patents ref References references Rubidium compounds DEFAULTSORT Rubidium Carbonate Category Carbonates Category Rubidium compounds inorganic compound stub cs Uhli itan rubidn de Rubidiumcarbonat fa ja nl Rubidiumcarbonaat zh ... more details
Chembox verifiedrevid 428962401 ImageFile RbNO3 xtal 1992 CM 3D sf.png ImageSize 200px IUPACName Rubidium nitrate OtherNames Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 23971 InChI 1S NO3.Rb c2 1 3 4 q 1 1 InChIKey RTHYXYOJKHGZJT UHFFFAOYAE SMILES Rb . O N O O StdInChI Ref stdinchicite correct chemspider StdInChI 1S NO3.Rb c2 1 3 4 q 1 1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey RTHYXYOJKHGZJT UHFFFAOYSA N InChIKey1 RTHYXYOJKHGZJT UHFFFAOYSA N CASNo 13126 12 0 CASNo Ref cascite correct CAS EINECS 236 060 1 PubChem 25731 InChI RTECS QV0900000 Section2 Chembox Properties Formula RbNO sub 3 sub MolarMass 147.473 g mol Appearance ... 44.28 g 100 mL 16 C , 65 g 100 mL 25 C ref name Ullmann W. Lenk, H. Prinz, A. Steinmetz, Rubidium and Rubidium Compounds in Ullmann s Encyclopedia of Industrial Chemistry, 2010 Wiley VCH Verlag GmbH ... nitrate OtherCpds Rubidium sulfate br Rubidium chloride Rubidium nitrate is an inorganic compound with the formula rubidium Rb nitrate NO sub 3 sub . This Salt chemistry salt is white and highly soluble in water. Properties Image RbNO3 Solubilite dans eau.png left thumb Solubility of rubidium nitrate in water Rubidium nitrate is a white crystalline powder that is highly soluble in water and very .... Uses Rubidium compounds have very few applications. ref name Ullmann Like caesium nitrate , it is used ... as a raw material for preparation of other rubidium compounds and rubidium metal, for manufacture ... violet color. Production RbNO sub 3 sub can be prepared either by dissolving rubidium metal, its hydroxide ... sub 2 RbNO sub 3 sub H sub 2 sub References references Rubidium compounds DEFAULTSORT Rubidium Nitrate Category Rubidium compounds Category Nitrates Category Pyrotechnic oxidizers Category Pyrotechnic ... fa fr Nitrate de rubidium nl Rubidiumnitraat ja pt Nitrato de rub dio simple Rubidium nitrate ... more details
chembox verifiedrevid 380552214 ImageFile Rubidium oxide xtal 3D vdW B.png IUPACName Rubidium oxide OtherNames Rubidium I oxide br Dirubidium oxide Section1 Chembox Identifiers CASNo 18088 11 4 CASNo Ref ... Yellow solid Density 4 g cm sup 3 sup Solubility Reacts violently to give Rubidium hydroxide ... OtherCations Lithium oxide br Sodium oxide br Potassium oxide br Caesium oxide OtherFunctn Rubidium suboxide br Rubidium peroxide br Rubidium superoxide Function rubidium oxide s OtherCpds Rubidium hydroxide Rubidium oxide is the chemical compound with the chemical formula formula Rb sub 2 sub O. Rubidium oxide is highly reactive towards water, and therefore it would not be expected to occur naturally. The rubidium content in mineral s is often calculated and quoted in terms of Rb sub 2 sub O. In reality, the rubidium is typically present as a component of actually, an impurity in silicate or aluminosilicate . A major source of rubidium is lepidolite , KLi sub 2 sub Al Al,Si sub 3 sub O ... relative to their positions in calcium fluoride CaF sub 2 sub , with rubidium ions 8 coordinate ..., Rb sub 2 sub O reacts exothermically with water to form rubidium hydroxide . Rb sub 2 sub O H sub ... heating, Rb sub 2 sub O reacts with hydrogen to rubidium hydroxide and rubidium hydride ref cite ... location San Diego isbn 978 0123526519 ref The suboxide s of rubidium that have been characterized ... 8545 97 00013 1 ref The final product of oxygenation of Rb is principally RbO sub 2 sub , rubidium ... excess rubidium metal 3 Rb RbO sub 2 sub 2 Rb sub 2 sub O References reflist Further reading cite web url http www.diracdelta.co.uk science source r u rubidium 20oxide source.html title Rubidium Oxide ... 16 November 2011 cite web url http www.webelements.com compounds rubidium dirubidium oxide.html title Rubidium compounds dirubidium oxide work WebElements the periodic table on the web publisher ...?LBCID 67207776&storeId 10652&aid 221420 title Rubidium Oxide work fishersci.com publisher Thermo ... more details
chembox verifiedrevid 401045159 ImageFile rubidium perchlorate.png ImageSize 120px IUPACName Rubidium perchlorate OtherNames Perchloric acid rubidium salt, br Rubidium chlorate VII Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 145966 InChI 1 ClHO4.Rb c2 1 3,4 5 h H,2,3,4,5 q 1 p 1 InChIKey NQYGGOOZLKJKPS REWHXWOFAS StdInChI Ref stdinchicite correct chemspider StdInChI 1S ClHO4.Rb c2 1 3,4 5 h H,2,3,4,5 q 1 p 1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey NQYGGOOZLKJKPS UHFFFAOYSA M CASNo 13510 42 4 EINECS 236 840 1 PubChem 166834 SMILES Rb . O Cl O O O Section2 Chembox Properties Formula RbClO sub 4 sub MolarMass 184.918 g mol Appearance Colorless crystals Density 2.878 g cm sup 3 sup br 2.71 g cm sup 3 sup over 279 C MeltingPtC 281 BoilingPt 600 C decomp. Solubility see chart Section3 Chembox Hazards MainHazards NFPA H 2 NFPA F 0 NFPA R 0 NFPA O OX RPhrases R8 , R36 38 SPhrases S2 , S46 FlashPt Autoignition Reference ref name chtas F. Brezina, J. Mollin, R. Pastorek, Z. Sindelar. Chemicke tabulky anorganickych sloucenin Chemical tables of inorganic compounds . SNTL, 1986. ref Rubidium perchlorate , RbClO sub 4 sub , is the perchlorate of rubidium . It is an oxidizing agent , as are all perchlorate s. It has two allotropes. One, below 279 C crystallizes in orthorhombic crystal system with lattice constant s a 0.927 nm, b 0.581 nm, c 0.753 nm. Over 279 C, it has Cubic crystal system cubic structure with lattice constant a 0.770 nm. ref name chtas Table of solubility in water ref name chtas class wikitable Temperature C 0 8.5 14 20 25 50 70 99 Solubility g 100 ml 1.09 0.59 0.767 0.999 1.30 3.442 6.72 17.39 References references External links http www.sciencelab.com xMSDS Rubidium Perchlorate 9924845 MSDS at Science Lab Rubidium compounds Category Perchlorates Category Rubidium compounds Category Oxidizing agents inorganic compound stub ar de Rubidiumperchlorat fa ... more details
chembox verifiedrevid 464384175 Name Rubidium chloride ImageFile Rubidium chloride 3D ionic.png ImageSize 150px ImageName Rubidium chloride s NaCl structure ImageFile1 Rubidium chloride CsCl structure 3D ionic.png ImageSize1 150px ImageName1 Rubidium chloride s CsCl structure OtherNames rubidium I chloride ... kg rat Section8 Chembox Related OtherAnions Rubidium fluoride br Rubidium bromide br Rubidium iodide OtherCations Lithium chloride br Sodium chloride br Potassium chloride br Caesium chloride Rubidium ... common. A cubic crystal system cubic close packed arrangement of chloride anion s with rubidium cation ... ref name Shriver . Sphalerite tetrahedral 4 4 The sphalerite polymorph of rubidium chloride is extremely ... Synthesis The most common preparation of pure rubidium chloride involves the reaction of its hydroxide .... It is offered in a variety of forms for chemical and biomedical research. Uses Rubidium chloride has ... rhythm, even for stressed organisms ref name Hallonquist . Infusing tumor cells with rubidium chloride .... This is thought to occur through rubidium chloride s inactivation of essential ionic hydrogen . RbCl ... of a rubidium chloride rb 82 radioactive isotope to evaluate perfusion of myocardium heart ... rubidium chloride journal Journal of Physics Condensed Matter volume 18 pages 683 702 year 2006 ... 7791119.html Compounds of Rubidium. WebElements . ref ref name Akutagawa cite journal author Akutagawa ..., J. Lindegger, M. Mrosovsky, N. title Rubidium chloride fuses split circadian activity rhythms in hamsters ... within the host plant with rubidium for dispersal studies journal Entomologia Experimentalis et Applicata ... ?id 7QvKqNZrxocC&lpg PA101&dq Rubidium 20antidepressant&pg PA101 v onepage&q ref ref name isbn0 ... ref Rubidium compounds Antidepressants Stimulants Psychostimulants DEFAULTSORT Rubidium Chloride Category Rubidium compounds Category Chlorides Category Antidepressants Category Stimulants de Rubidiumchlorid ... pl Chlorek rubidu ru simple Rubidium chloride zh ... more details
Rubidium Rb has 32 isotope s, with naturally occurring rubidium being composed of just two isotopes sup 85 sup Rb 72.2 and the radioactive sup 87 sup Rb 27.8 . Normal mixes of rubidium are radioactive enough to fog photographic film in approximately 30 to 60 days. Standard atomic mass is 85.4678 3 unified atomic mass unit u . sup 87 sup Rb has a half life of 4.92× 10 sup 10 sup years. It readily substitutes for potassium in mineral s, and is therefore fairly widespread. sup 87 sup Rb has been used extensively in rock dating dating rocks sup 87 sup Rb decays to stable strontium 87 by emission of a negative beta particle . During Fractional crystallization geology fractional crystallization , Sr tends to become concentrated in plagioclase , leaving Rb in the liquid phase. Hence, the Rb Sr ratio in residual magma may increase over time, resulting in rocks with increasing Rb Sr ratios with increasing rock differentiation differentiation . Highest ratios 10 or higher occur in pegmatite ... age of the minerals only if the rocks have not been subsequently altered. See rubidium strontium ..., but can be made from the decay of sup 82 sup Sr. Rubidium 87 Rubidium 87 is an isotope of rubidium . Rubidium 87 was the first and the most popular atom for making Bose Einstein condensate s in dilute atomic gas ses. Even though rubidium 85 is more abundant, rubidium 87 has a positive scattering ... s which can operate at the correct wavelength. Rubidium 87 has an atomic mass of 86.9091835 u, and a binding ... 87 sup Rb ref group n Primordial nuclide Primordial radionuclide ref ref group n Used in rubidium strontium ... data selected from the following sources. See editing notes on Talk Isotopes of rubidium this article ... Press isbn 978 0849304859 Isotope nav element rubidium lighter Isotopes of krypton heavier Isotopes of strontium Category Rubidium Category Isotopes of rubidium Category Lists of isotopes by element Rubidium ca Is tops del rubidi nl Isotopen van rubidium ja zh ... more details
Rubidium silver iodide is a ternary compound ternary inorganic compound with the formula RbAg sub 4 sub I sub 5 sub . It is an unusual solid where the electrical conductivity involves movement of silver ion s within the crystal lattice. It was discovered while searching for chemicals which had the ionic conductivity properties of alpha phase silver iodide at temperatures below the 146 C for AgI. ref name Smart Rubidium silver iodide can be formed by melting together ref name Popov or grinding together ref name Peng stoichiometric quantities of rubidium iodide and silver I iodide . The reported conductivity is 25 Siemens unit siemens per metre that is a 1 1 10 mm bar would have a resistance of 400 ohms along the long axis . The crystal structure is composed of sets of iodine tetrahedra they share faces through which the silver ions are able to diffuse. ref cite journal title Crystal Structure of the Solid Electrolyte, RbAg4I5 first S. last Geller journal Science year 1967 volume 157 issue 3786 doi 10.1126 science.157.3786.310 pages 310 312 pmid 17734228 ref Rubidium silver iodide was proposed around 1970 as a solid electrolyte for batteries, and has been used in conjunction with electrodes of silver and of triiodide RbI sub 3 sub . ref name Smart Rubidium silver iodide family is a group of compounds and solid solutions which are isostructural with the RbAg sub 4 sub I sub 5 sub alpha modification. The examples of such advanced superionic conductors with mobile Ag sup sup and Cu sup sup cation s are KAg sub 4 sub I sub 5 sub , NH sub 4 sub Ag sub 4 sub I sub 5 sub , K sub 1 x sub Cs sub x sub Ag sub 4 sub I sub 5 sub , Rb sub 1 x sub Cs sub x sub Ag sub 4 sub I sub 5 sub , CsAg sub 4 sub Br sub 1 x sub I sub 2 x sub , CsAg sub 4 sub ClBr sub 2 sub I sub 2 sub , CsAg sub 4 sub Cl sub 3 sub I sub 2 sub , RbCu sub 4 sub Cl sub 3 sub I sub 2 sub , KCu sub 4 sub I sub 5 ... 25 pages 1636 1640 ref Category Metal halides Category Iodides Category Rubidium compounds Category ... more details
The rubidium strontium dating method is a radiometric dating technique used by scientist s to determine the Radiometric dating age of rocks and minerals from the quantities they contain of specific isotopes of rubidium sup 87 sup Rb and strontium sup 87 sup Sr, sup 86 sup Sr. Development of this process was aided by German people German chemistry chemist Fritz Strassmann , who later went on to discover nuclear fission with German chemist Otto Hahn and Swedish people Swedish physics physicist Lise Meitner . The utility of the rubidium strontium isotope system results from the fact that sup 87 sup Rb one of two naturally occurring isotopes of rubidium decays to sup 87 sup Sr with a halflife of 48.8 billion years. In addition, Rb is a highly incompatible element that, during Fractional crystallization geology fractional crystallization of the mantle, stays in the magmatic melt rather than becoming part of mantle mineral s. The Radiogenic nuclide radiogenic daughter, sup 87 sup Sr, is produced in this decay process and was produced in the original Nucleosynthesis primordial nucleosynthesis of the universe. Different minerals in a given geologic setting can acquire distinctly different ratios of radiogenic strontium 87 to naturally occurring strontium 86 sup 87 sup Sr sup 86 sup Sr through time and their age can be calculated by measuring the sup 87 sup Sr sup 86 sup Sr in a mass spectrometry ... initial rubidium strontium ratio dependent on their potassium content, the concentration of Rb and K in the melt and the temperature at which the minerals formed. Rubidium substitutes for potassium ... book url http books.google.de books?id k90iAnFereYC&pg PA162 chapter Rubidium Strontium Dating title ... & Bartlett Learning year 1988 2009 isbn 9780763759223 chapter Rubidium Strontium Systematics pages 383 ... Sr Seawater Isotope Evolution Category Radiometric dating Category Rubidium Category Strontium de Strontiumisotopenanalyse fr Datation par le couple rubidium strontium nl Rubidium strontiumdatering ... more details
In telecommunication s, a secondary frequency standard is a frequency standard that does not have inherent accuracy , and therefore must be calibrated against a primary standard primary frequency standard . Secondary standards include crystal oscillator s and rubidium standard s. A crystal oscillator depends for its frequency on its physical dimensions, which vary with fabrication and environmental conditions. A rubidium standard is a secondary standard even though it uses atomic transitions, because it takes the form of a gas cell through which an optical Signalling telecommunication signal is passed. The gas cell has inherent inaccuracies because of gas pressure variations, including those induced by temperature variations. There are also variations in the concentrations of the required buffer gases, which variations cause frequency deviations. References FS1037C Category Electronics standards Category Telecommunications standards telecomm stub ... more details
saved book title Alkali metals subtitle An overview cover image Nametal.JPG.jpg cover color Alkali metals An overview Properties Alkali metal Alkali metal halide Elements Lithium Sodium Potassium Rubidium Caesium Francium Ununennium Category Wikipedia books on chemistry Category Wikipedia books on chemical elements Category Alkali metals Wikipedia books on elements ... more details
saved book title Period 5 elements subtitle cover image Rb5.JPG cover color Period 5 elements Overview Period 5 element Elements Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Category Wikipedia books on the periodic table Period 5 elements Category Wikipedia books on chemical elements Wikipedia books on elements ... more details
Chembox IUPACName Rubidium 82 chloride SystematicName sup 82 sup Rb Rubidium chloride Section1 Chembox Identifiers CASNo 132486 03 4 CASNo Ref cascite correct ?? PubChem 71357 PubChem Ref Pubchemcite correct PubChem ChemSpiderID 64457 ChemSpiderID Ref chemspidercite correct chemspider KEGG D05773 KEGG Ref Keggcite correct kegg SMILES Cl . 82Rb StdInChI 1S ClH.Rb h1H q 1 p 1 i 1 3 StdInChI Ref stdinchicite correct chemspider StdInChIKey FGDZQCVHDSGLHJ RYDPDVNUSA M StdInChIKey Ref stdinchicite correct chemspider Section2 Chembox Properties Formula ClRb MolarMass 117.371 g mol sup 1 sup ExactMass 116.887060398 g mol sup 1 sup Section3 Chembox Related OtherCations Caesium chloride br Lithium chloride br Potassium chloride br Rubidium chloride br Sodium chloride br Rubidium 82 chloride is a form of rubidium chloride using a radioactive isotope of rubidium . It is marketed under the brand name Cardiogen 82 Bracco Diagnostics in the use of Myocardial perfusion imaging imaging of the heart . ref name Gen cite book url http books.google.de books?id NS5ulJOG6wUC&pg PA181 chapter Rubidium 82 Generator title Nuclear cardiology the basics how to set up and maintain a laboratory isbn 9781588299246 author1 Th Wackers, Frans J author2 Bruni, Wendy author3 Zaret, Barry L date 2007 11 19 ref It is rapidly taken up by myocardium heart muscle cells, and therefore can be used to identify regions of heart muscle that are receiving poor perfusion blood flow in a technique called positron emission tomography PET perfusion imaging. ref cite journal last1 Ballinger first1 James R. title Integrating Cardiology ... 82 rubidium 82 generators and quality control of rubidium 82 chloride for myocardial perfusion imaging .... M. Curseys eds. title The Strontium 82 rubidium 82 generator journal International journal of radiation ... 171 239 year 1987 url http www.sciencedirect.com science journal 08832889 38 3 DEFAULTSORT Rubidium 82 Chloride Category Radiocontrast agents Category Rubidium compounds Category Chlorides Pharma stub ... more details
Image DOT Hazard Class 4.png right A water reactive substance is one that spontaneously undergoes a chemical reaction with water. Notable examples include alkali metal s sodium through caesium . Water reactive substances are classified as R2 under the UN number UN classification system and as Hazard 4.3 by the United States Department of Transportation . Some water reactive substances are also pyrophoricity pyrophoric . Some of the metals that are reactive with water are lithium , sodium , potassium , rubidium , and caesium . These metals are usually stored in containers with oil so that, if any water is brought into the container, it and the oil will separate, protecting the metal. Further reading cite web url http www.ilpi.com msds ref waterreactive.html title The MSDS HyperGlossary Water Reactive publisher Interactive Learning Paradigms Incorporated accessdate 2007 05 10 Category Chemical safety chem stub ... more details
RBF is a three letter abbreviation that may refer to Kel Tec RFB , an American made assault rifle . Red Bull Friday R. Buckminster Fuller Reel Big Fish , a ska punk band Radial basis function Rassemblement Bruxelles France Round bottom flask , a piece of laboratory glassware Raw Binary File , a file format used by Altera for programming electronic devices Remove before flight Renal blood flow Big Bear City Airport RBF Consulting Refined by Fire Root Beer Float Ice Cream floated in a glass of Root Beer RbF may refer to Rubidium fluoride disambig de RBF fr RBF it RBF ja RBF pl RBF ru ... more details
RBO or Rbo may refer to Rock et Belles Oreilles , a Qu b cois radio, television and stage comedy group MTA Regional Bus Operations , the surface transit division of New York s Metropolitan Transportation Authority Ragnarok Battle Offline , a computer game Reliability based optimization, a Multidisciplinary design optimization method Rubidium oxide , the chemical compound Rb sub 2 sub O Robert Brownlee Observatory in in Lake Arrowhead, California Rule Based Optimization, an SQL Query plan optimization technique Red Buttes Observatory near Laramie, Wyoming Rang Badalti Odhani disambig de RBO it RBO ... more details
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