A-LevelChemistryChemical periodicity9701/12 · May/June 2019 · Q121 Mark

Element Q readily oxidises in air. The oxide produced reacts with water to form a solution of very low pH. Where could element Q be found in the Periodic Table? period group A 2 1 B 2 14 C 3 14 D 3 15

Aperiod: 2, group: 1

Bperiod: 2, group: 14

Cperiod: 3, group: 14

Dperiod: 3, group: 15

✓ Correct answer

D: period: 3, group: 15

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2019 Paper 1 Variant 2, question 12.

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