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Assertion (A) : Nuclide AI(13)^(30) is l...

Assertion (A) : Nuclide `AI_(13)^(30)` is less stable than `Ca_(20)^(40)`
Reason (R ) : Nuclide having odd number of proton and neuctrons are generally unstable

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The correct Answer is:
B
When the `n//p` ratio is more than 1, then nuclei is unstable but when it is 1, then nuclei is stable. In `._(13)Al^(30),n//p=17//13=1.3(i.e.,` more than 1 , so less stable `)`, but in `._(20)Ca^(40), n//p1( ` more stable `)`
Nuclei with odd number of protons and neutrons are generally unstable.
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