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5.2.3a Radioactive decay

Radium-226 decays by the emission of an $α\alpha$ -particle.

Which equation represents the decay of a radium-226 nucleus?

$−10α^{226}_{88}\text{Ra} \to ^{226}_{89}\text{Rn} + \ ^{0}_{-1}\alpha$

$24α^{226}_{88}\text{Ra} \to ^{222}_{86}\text{Rn} + \ ^{4}_{2}\alpha$

$42α^{226}_{88}\text{Ra} \to ^{222}_{86}\text{Rn} + \ ^{2}_{4}\alpha$

$24α^{226}_{88}\text{Ra} \to ^{230}_{90}\text{Rn} + \ ^{4}_{2}\alpha$

5.2.3a Radioactive decay Questions

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.

Radium-226 decays by the emission of an $α\alpha$ -particle.

Which equation represents the decay of a radium-226 nucleus?

$−10α^{226}_{88}\text{Ra} \to ^{226}_{89}\text{Rn} + \ ^{0}_{-1}\alpha$

$24α^{226}_{88}\text{Ra} \to ^{222}_{86}\text{Rn} + \ ^{4}_{2}\alpha$

$42α^{226}_{88}\text{Ra} \to ^{222}_{86}\text{Rn} + \ ^{2}_{4}\alpha$

$24α^{226}_{88}\text{Ra} \to ^{230}_{90}\text{Rn} + \ ^{4}_{2}\alpha$

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.