A-LevelChemistryChemical periodicity9701/12 · Oct/Nov 2014 · Q141 Mark

Use of the Data Booklet is relevant to this question. Sir Humphrey Davy discovered boron, calcium, magnesium and sodium. Which of these elements has the second smallest atomic radius in its group and the third lowest first ionisation energy in its period?

Aboron

Bcalcium

Cmagnesium

Dsodium

✓ Correct answer

C: magnesium

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 2, question 14.

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