O-LevelPhysicsNuclear Physics5054/11 · May/June 2010 · Q371 Mark

In one radioactive decay, radium (Ra) gives rise to radon (Rn) as shown. ²²⁶Ra → ²²²Rn ⁸⁸ ⁸⁶ What particle is also produced?

Aan alpha-particle

Bbeta-particle

Cboth an alpha-particle and a beta-particle

Dno particle but only gamma-rays

✓ Correct answer

A: an alpha-particle

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Topic: Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2010 Paper 1 Variant 1, question 37.

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