Chemistry · May / June 2023 · Paper 11 · Question 3
5070Isotopes
The numbers of electrons, protons and neutrons in four different particles are shown. particle electrons protons neutrons 1 19 19 20 2 18 19 20 3 20 20 20 4 19 19 22 Which particles are isotopes of the same element?
- A1 and 2 only
- B1 and 3 only
- C1 and 4
- D1, 2 and 3
As printed in the paper
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Correct answer: C. 1 and 4
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