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Nuclear Radius

If a heavy nu...

Question

If a heavy nucleus has N/Z ratio higher than that required for stability, then:

it emits

β^{-}

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It emits

β^{+}

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It emits

α

particle

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None of these

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Solution

The correct option is A it emits $β^{-}$
A higher N/Z ratio indicates the nuclear would have a tendency
to decay to proton $(z ↑)$ from neutrons $(N ↓)$ thus decreasing
$N / 2$ ratio to optimum.
So, a neutron can undergo $β^{-}$ decay to from a proton.
$n_{0} \to p^{+} + β^{-}$ .

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