A-LevelChemistryAtomic structure9701/12 · Oct/Nov 2013 · Q41 Mark
Use of the Data Booklet is relevant to this question. In which set do all species contain the same number of electrons?
ACo²⁺, Co³⁺, Co⁴⁺
BF, Br, Cl
CNa⁺, Mg²⁺, Al³⁺
DK2SO4, K2SeO4, K2TeO4
✓ Correct answer
C: Na⁺, Mg²⁺, Al³⁺
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