O-LevelChemistryAtomic Structure5070/12 · May/June 2016 · Q231 Mark

From their position in the Periodic Table, which statement is correct?

AAtoms of elements in Group VII react to form ions by losing one electron.

BIodine can displace bromine from its salts.

CPotassium reacts more rapidly than lithium with water to form the hydroxide and hydrogen.

DThe melting point of caesium is greater than that of potassium.

✓ Correct answer

C: Potassium reacts more rapidly than lithium with water to form the hydroxide and hydrogen.

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2016 Paper 1 Variant 2, question 23.

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