A-LevelChemistryGroup 29701/12 · Oct/Nov 2015 · Q121 Mark

Which property decreases on descending Group II?

Aradius of the cation, M²⁺

Breactivity of the element with water

Cshielding of outermost electrons

Dthe ease of thermal decomposition of the carbonates, MCO₃

✓ Correct answer

D: the ease of thermal decomposition of the carbonates, MCO₃

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