A-LevelChemistryGroup 29701/12 · Feb/Mar 2017 · Q141 Mark
Why does barium react more rapidly with cold water than magnesium does?
ABarium atoms are larger and form ions more easily than magnesium atoms.
BBarium floats on the surface of the water but magnesium sinks in the water.
CBarium hydroxide is less soluble than magnesium hydroxide.
DThe sum of the 1st and 2nd ionisation energies of barium is more than that for magnesium.
✓ Correct answer
A: Barium atoms are larger and form ions more easily than magnesium atoms.
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Group 2 and see which topics are most likely to come up next.
Sign up free →