AQA A level Chemistry - Group 2 with 100% correct answers
As you go down the group, atomic radius increases As you go down the group, ionisation energy decreases As you go down the group, melting point (WHY) generally decreases as the metallic bonding gets weaker due to the atomic radius increasing 3 factors affecting metallic bonding 1. Charge on ion 2. Atomic radius 3. No. of delocalized electrons in the cloud Be with water No reaction Mg with steam Mg + H2O(g) > MgO + H2 Mg with water Mg + 2H2O > Mg(OH)2 + H2 Ca, Sr and Ba with water all follow same reaction pattern Solubility of the hydroxides as you go down the group increases Solubility of the sulphates as you go down the group decreases
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aqa a level chemistry group 2 with 100 correct answers