1.

A plot of the number of neutrons (n) against the number of protons (p) of stable nuclei exhibits upward deviation from linearity for atomic number, Z > 20. For an unstable nucleus having n, p ratio less than 1, the possible mode(s) of decay is(are)

Answer»

<P>`beta^(-)`-decay `(beta`emission)
orbital or K- ELECTRON capture
neutron emission
`beta^(+)`-decay (POSITRON emission).

Solution :NUCLIDES with Z > 20 lying below the STABILITY belt decay by `beta+` (positorn) emission or K-electron capture so, that n,p ratio increases to `(N + 1)//(Z - 1)`.


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