AQA AS Chemistry Paper 1: Inorganic and Physical
Chamberlain College Of Nursing
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Exam (elaborations)
AQA AS Chemistry Paper 1: Inorganic and Physical Chemistry Exam Already Graded A+
Give the full electron configuration of an Al atom and a Cr3+ ion 
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 
Sr2+ 
Deduce the formula of the compound that contains 2+ ions and 3- ions that both have the same 
electron configuration as argon 
CaP 
Deduce which of Na+ and Mg2+ is the smaller ion 2 marks 
Mg 2+ 
Both have the same number of shielding however Mg2+ has more protons so higher nuclear charge 
and so stronger ...