Question
CCEA Unit 1
(a) Write the electron configuration of the following atoms: (i) Magnesium (Z = 12) [1 mark] (ii) Sulfur (Z = 16) [1 mark] (iii) Argon (Z = 18) [1 mark]
(b) Explain why the electron configuration of Mg²⁺ is the same as neon (Z = 10). [2 marks]
5 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.