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Question 31.1: Study the decay equations given in Worked examples 1 and 2, ...

Study the decay equations given in Worked examples 1 and 2, and write balanced equations for the following:

a A nucleus of radon-220 ( _{86}^{220}Rn) decays by α emission to form an isotope of polonium, Po.

b A nucleus of a sodium isotope ( _{11}^{25} Na) decays by β^{−} emission to form an isotope of  magnesium, Mg

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a ^{220} _{86}Rn →   ^{216} _{84}Po  +  ^{4} _{2}He

b ^{25} _{11}Na →   ^{25} _{12}Mg  +   ^{0}_{-1}e

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