A-LevelChemistryGroup 29701/12 · Oct/Nov 2018 · Q151 Mark

In which row are all statements comparing magnesium and barium correct?

Afourth ionisation energy: magnesium: higher, barium: lower; reaction with water: magnesium: faster, barium: slower

Bfourth ionisation energy: magnesium: higher, barium: lower; reaction with water: magnesium: slower, barium: faster

Cfourth ionisation energy: magnesium: lower, barium: higher; reaction with water: magnesium: faster, barium: slower

Dfourth ionisation energy: magnesium: lower, barium: higher; reaction with water: magnesium: slower, barium: faster

✓ Correct answer

B: fourth ionisation energy: magnesium: higher, barium: lower; reaction with water: magnesium: slower, barium: faster

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