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Question
Represent the change in the nucleus of a radioactive element when a β particle is emitted.
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Solution
In an unstable nucleus, the neutron is changed into a proton by emitting a beta particle. This is represented as:
\[\ce{\underset{(neutron)}{^1_0n} -> \underset{(proton)}{^1_1P} + \underset{(β-particle)}{^0_{-1}e}}\]
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