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Atomic structure

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Question 1

Copper has two naturally occurring isotopes, copper-63 and copper-65. A sample of copper contains 69.15% of copper-63 and 30.85% of copper-65. Calculate the relative atomic mass (ArA_rAr​) of copper in this sample. Give your answer to two decimal places. You must show your working.

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Atomic structure Questions

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