A-LevelChemistryAtomic structure9701/12 · May/June 2015 · Q11 Mark

Use of the Data Booklet is relevant to this question. In which option do all three particles have the same electronic configuration and the same number of neutrons?

A15N3- 16O2- 19F-

B18O2- 19F- 20Ne

C19F- 20Ne 23Na+

D22Ne 23Na 24Mg2+

✓ Correct answer

B: 18O2- 19F- 20Ne

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Topic: Atomic structure, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2015 Paper 1 Variant 2, question 1.

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