A-LevelChemistryAtomic structureFeb/Mar 2016Paper 1 Q31 Mark
Which ion has both more electrons than protons and more protons than neutrons? [H = ¹H; D = ²H; O = ¹⁶O]
AD⁻
BH₃O⁺
COD⁻
DOH⁻
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of atomic structure within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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