A-LevelChemistryAtomic structureMay/June 2015Paper 1 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?

Q: What is the correct answer to this A-Level Chemistry question?

The correct answer is B: 18O2- 19F- 20Ne.

Q: What topic does this question test?

This question tests Atomic structure in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

A15N3- 16O2- 19F-

B18O2- 19F- 20Ne

C19F- 20Ne 23Na+

D22Ne 23Na 24Mg2+

✓ Correct Answer

The correct answer is B: 18O2- 19F- 20Ne

📋 Examiner Report & Trap Analysis

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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Chemistry Question

Topic

This multiple-choice question tests Atomic structure in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry May/June 2015 examination, Paper 1 Variant 2.

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