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8(a)(ii)1 mark

Thallium-208 decays by β-decay to an isotope of lead. The β-emission of thallium-208 is accompanied by γ-emission from the nucleus.

Explain why this γ-emission does not affect the numbers in the decay equation.

0625/41/M/J/24Cambridge IGCSE Physics 0625 · May/June 2024 · Paper 4 variant 1 · Question 8(a)(ii)

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Suggested time: 2 min