AQA AS Chemistry Paper 1: Inorganic and Physical Chemistry Questions With Revised Correct Answers | Updated & Already Passed |
AQA AS Chemistry Paper 1: Inorganic and Physical Chemistry Questions With Revised Correct Answers | Updated & Already Passed | Give the full electron configuration of an Al atom and a Cr3+ ion - ANSWER : 1s2 2s2 2p6 3s2 3p1 1s 2s2 2p6 3s2 3p6 3d6 Deduce the formula of the ion that has a charge 2+ with the same electron - ANSWER : Sr2+ Deduce the formula of the compound that contains 2+ ions and 3- ions that both have the same electron configuration as argon - ANSWER : CaP Deduce which of Na+ and Mg2+ is the smaller ion 2 marks - ANSWER : Mg 2+ Both have the same number of shielding however Mg2+ has more protons so higher nuclear charge and so stronger attraction between out electrons and nucleus so smaller atomic radius First ionisation of sodium - ANSWER : Na(g) - Na+ + e
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