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Atomic structure

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Question 4
42%

A sample of the Group 1 metal rubidium contains:

  • 72.17% rubidium-85
  • 27.83% rubidium-87

Calculate the relative atomic mass (ArA_rAr​) of this sample of rubidium. Give your answer to 2 decimal places.

[2]

Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /Atomic structure