Chemistry · Oct / Nov 2019 · Paper 11 · Question 23
Three statements about the elements carbon, nitrogen and sulfur are shown. 1 They are in groups next to each other in the Periodic Table. 2 Their neutron to proton ratios are all two to one. 3 They each form an acidic oxide. Which statements are correct?
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only
As printed in the paper
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Correct answer: C. 1 and 3 only
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