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Stable Rubidium Isotopes - Rb Isotopes
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Nominal mass
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Accurate
mass
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% Natural abundance
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Chemical
form
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Enrichment available %
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85 Rb
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84.911794 (3)
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72.165 (13)
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chloride, carbonate, iodide, sulphate
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95 - 99+
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87 Rb
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86.909187 (3)
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27.835 (13)
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chloride, metal, iodide, carbonate, chromate
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82 - 99+
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Both Rubidium Isotopes have medical and industrial applications. Rb-87 is used as a frequency standard in high-precision timing equipment such as GPS receivers. It also used in the production of Bose-Einstein condensates and in laser cooling. Rb-85 is used for the production of the radioisotope Rb-86 which is used as a tracer. Rb-85 can also be used for the production of Sr-82, which is used in Sr-82/Rb-82 generators, though Sr-82 is generally produced with natural Rubidium.
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