FRQ — Chemical Bonding and Molecular Structure

Long answer·Standard multi-step (3/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

For

\mathrm{N_2}

and

\mathrm{O_2}

, compare bond order and magnetic behaviour using molecular orbital ideas.

Total: 5 marks

(a) State bond order of $\mathrm{N_2}$ . (1 mark)

(b) State bond order of $\mathrm{O_2}$ . (1 mark)

(d) State magnetic behaviour of $\mathrm{O_2}$ with reason. (2 marks)

Your response (optional — you can also work on paper)

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