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Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 39

9702Atoms, nuclei and radiation

A nucleus Q has the notation \(^{y}_{x}\text{Q}\). Which of the following is an isotope of Q?

  1. A\[^{y-1}_{x}\text{Q}\]
  2. B\[^{y}_{x-1}\text{Q}\]
  3. C\[^{y}_{x+1}\text{Q}\]
  4. D\[^{y-1}_{x+1}\text{Q}\]

As printed in the paper

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Correct answer: A. \[^{y-1}_{x}\text{Q}\]

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