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Chemistry · May / June 2022 · Paper 11 · Question 6

5070Atomic structure and the Periodic Table

Two particles have the symbols $^{54}_{26}\text{Fe}^{2+}$ and $^{59}_{27}\text{Co}^{3+}$. Which statement about these particles is correct?

  1. AThey contain the same number of electrons.
  2. BThey contain the same number of neutrons.
  3. CThey contain the same number of protons.
  4. DThey do not contain the same number of protons, neutrons or electrons.

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Correct answer: A. They contain the same number of electrons.

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