Which of the following correctly represents the –decay of radium-226?

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

Which of the following correctly represents the

\alpha

–decay of radium-226? (a)

^{226}_{88}\text{Ra} \to ^{222}_{88}\text{Ra}+^{4}_{0}\text{He}

(b)

^{226}_{88}\text{Ra} \to ^{222}_{84}\text{Po}+^{4}_{2}\text{He}

(c)

^{226}_{88}\text{Ra} \to ^{222}_{86}\text{Rn}+^{4}_{2}\text{He}

(d)

^{226}_{88}\text{Ra} \to ^{230}_{86}\text{Rn}+^{4}_{2}\text{He}