O-LevelChemistryAtomic Structure5070/11 · Oct/Nov 2016 · Q81 Mark

Which statement about chlorine atoms and chloride ions is correct?

AThey are both isotopes of chlorine.

BThey undergo the same chemical reactions.

CThey have the same number of protons.

DThey have the same physical properties.

✓ Correct answer

C: They have the same number of protons.

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2016 Paper 1 Variant 1, question 8.

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