A-LevelChemistryChemical periodicity9701/12 · Feb/Mar 2020 · Q161 Mark

Sodium, magnesium and aluminium are three elements in Period 3 of the Periodic Table. Each element forms an oxide. Which row is correct?

Asodium oxide: basic, magnesium oxide: amphoteric, aluminium oxide: amphoteric

Bsodium oxide: giant ionic, magnesium oxide: giant ionic, aluminium oxide: simple molecular

Csodium oxide: high melting point, magnesium oxide: high melting point, aluminium oxide: low melting point

Dsodium oxide: readily reacts with water, magnesium oxide: slight reaction with water, aluminium oxide: no reaction with water

✓ Correct answer

D: sodium oxide: readily reacts with water, magnesium oxide: slight reaction with water, aluminium oxide: no reaction with water

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2020 Paper 1 Variant 2, question 16.

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