A potassium nucleus emits a and becomes:

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

3. A potassium

{ }^{40} \mathrm{~K}_{19}

nucleus emits a

\mathrm{B}^{-}

and becomes: (A)

{ }^{36} \mathrm{Cl}_{17}

(B)

{ }^{40} \mathrm{Ar}_{18}

(C)

{ }^{40} \mathrm{~K}_{19}

(D)

{ }^{40} \mathrm{Ca}_{20}