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O-LevelPhysicsNuclear Physics5054/12 · Oct/Nov 2014 · Q391 Mark

When a radioactive atom decays by alpha-particle emission, its nucleus loses

A1 proton only.
B1 proton and 1 electron.
C2 protons and 2 electrons.
D2 protons and 2 neutrons.

✓ Correct answer

D: 2 protons and 2 neutrons.

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About this question

Topic
Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, Oct/Nov 2014 Paper 1 Variant 2, question 39.

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