A-LevelChemistryChemical periodicity9701/12 · Feb/Mar 2024 · Q161 Mark

The relative magnitude of the property X of five elements is shown. P, Q, R, S and T are all in Period 3 and have consecutive atomic numbers. The letters are not the actual chemical symbols of the elements. [Figure depicting a graph with 'X' on y-axis and 'atomic number' on x-axis, showing points P, Q, R, S, T] Which row is correct for property X and element R?

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Aproperty X: electrical conductivity, element R: Al

Bproperty X: electronegativity, element R: Si

Cproperty X: melting point, element R: Al

Dproperty X: second ionisation energy, element R: Si

✓ Correct answer

A: property X: electrical conductivity, element R: Al

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2024 Paper 1 Variant 2, question 16.

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