91Ó°ÊÓ

In nuclear physics, beta decay βis a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron) that transforms the original nuclide into an isobar of that nuclide.

As it is known the equation for βdecay is –

\(_Z^A{X_N} \to _{Z + 1}^{A - 4}{Y_{N - 1}} + {\beta ^ - } + {v_e}\)

The initial charge is Z.

The final charge is (Z + 1) - 1 = Z

Hence, charge is conserved.

The Initial electron family number is zero.

The final electron family number is 1 for β and - 1 for v_e, hence, total electron family number iszero. So, electron family number is conserved.

The initial nucleons number is A.

The final nucleons number is A + 0 + 0 = A.

Hence, number of nucleons is conserved.

Therefore, all the quantities are conserved for the reaction.