• # question_answer In the beta decay: $_{Z}^{A}X\,\,\to \,\,_{Z+1}^{A}Y\,\,+\,\,{{e}^{-}}$ (i) total energy is conserved (ii) mass number is conserved (iii) charge is conserved (iv) spin angular momentum is conserved A) a, b      B)               b , cC) a , c                             D) c , d

Charge is always conserved. In$\beta -decay$, neutron is converted into proton.