A-LevelPhysicsNuclear physics9702/12 · May/June 2010 · Q381 Mark

The following represents a sequence of radioactive decays involving two α-particles and one β-particle. ²¹⁷₈₅At → α → V → α → W → β → X What is the nuclide X?

A²¹³₈₅At

B²¹⁵₇₇Ir

C²⁰⁹₈₂Pb

D²¹⁷₈₁Tl

✓ Correct answer

C: ²⁰⁹₈₂Pb

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Topic: Nuclear physics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2010 Paper 1 Variant 2, question 38.

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