A-LevelPhysicsNuclear physics9702/12 · Oct/Nov 2017 · Q391 Mark
The diagram shows a sequence of radioactive decays involving three α-particles and a β⁻ particle. [Figure showing a decay chain: ²³⁷₉₃Np → Q (α) → R (β⁻) → S (α) → T (α)] What is nuclide T?
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.
A²²⁵₈₈Ra
B²³¹₈₈Ra
C²²⁵₉₀Th
D²²⁹₉₀Th
✓ Correct answer
A: ²²⁵₈₈Ra
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