A-LevelChemistryChemical periodicity9701/12 · May/June 2011 · Q151 Mark

The diagram shows the first ionisation energies of 11 consecutive elements. [Figure 15.1] Which type of elements are labelled X and Y?

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AGroup I metals

BGroup II metals

Chalogens

Dnoble gases

✓ Correct answer

A: Group I metals

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2011 Paper 1 Variant 2, question 15.

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