A-LevelChemistryAtomic structure9701/12 · May/June 2015 · Q311 Mark
Use of the Data Booklet is relevant to this question. Which statements about the phosphide ion, ³¹P³⁻, and the chloride ion, ³⁵Cl⁻, are correct? 1 They have the same number of electrons. 2 They have the same number of neutrons. 3 They have the same number of protons.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
✓ Correct answer
D: 1 only is correct
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