O-LevelChemistryAtomic Structure5070/11 · Oct/Nov 2011 · Q231 Mark

Which statement about the elements chlorine, bromine and iodine is correct?

AThey are all gases at room temperature and pressure.

BThey are in the same period of the Periodic Table.

CThey become darker in colour from chlorine to bromine to iodine.

DThey possess one electron in the outermost shell.

✓ Correct answer

C: They become darker in colour from chlorine to bromine to iodine.

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2011 Paper 1 Variant 1, question 23.

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