A-LevelChemistryChemical bonding9701/12 · Feb/Mar 2025 · Q51 Mark

The structure of the hormone histamine is shown. Which row contains the bond angles x, y and z in histamine in the correct order from the smallest to the largest?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Ax y z

By x z

Cy z x

Dz y x

✓ Correct answer

A: x y z

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2025 Paper 1 Variant 2, question 5.

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