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Atomic structure and isotopes

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Question 5

A sample of copper contains the isotopes 63Cu^{63}\text{Cu}63Cu and 65Cu^{65}\text{Cu}65Cu. The relative atomic mass of the copper sample is 63.5. What is the percentage of 63Cu^{63}\text{Cu}63Cu atoms in the sample of copper?

25%25\%25%

35%35\%35%

65%65\%65%

75%75\%75%

Atomic structure and isotopes Questions

  1. A Level
  2. /Chemistry
  3. /Atomic structure and isotopes