Rbidium has two naturally occurring isotopes rubidium -85


(1) Each of the following isotopes is used in medicine. Indicate the number of portons and neutrons in each isotope: (a) phosphorus -32, (b) chromium -51, (c) cobalt -60, (d) technetium -99, (e) iodine -131, (f) thallium -201.

(2) Rubidium has two naturally occurring isotopes, rubidium -85 ( atomic mass = 84.9118 amu; abundance = 72.15%) and rubidium -87 (atomic mass = 86.9092; abundance = 27.85%). Calculate the atomic weight of rubidium.

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Chemistry: Rbidium has two naturally occurring isotopes rubidium -85
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