A-LevelPhysicsNuclear physics9702/12 · Feb/Mar 2018 · Q391 Mark

A nucleus of neptunium-236 contains 93 protons and 143 neutrons. This nucleus decays with the emission of an α-particle. The nucleus formed then emits a β⁻ particle. Which diagram shows the changes in the number P of protons and the number N of neutrons in these nuclei?

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.

A[Diagram option]

B[Diagram option]

C[Diagram option]

D[Diagram option]

✓ Correct answer

D: [Diagram option]

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Topic: Nuclear physics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2018 Paper 1 Variant 2, question 39.

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