Question

The mass number and atomic number of an element are not changed when it emits ______

Answer 1

Radioactive emission​
α-particle​
${}_Z^{A}X{\to }_{Z-2}^{A-4}Y{+}_2^{4}He$

β-particle​
${}_Z^{A}X{\to }_{Z+1}^{A}Y{+}_{-1}^0\beta$

γ-particle​
${}_Z^{A}X{\to }_Z^{A}X{+}_0^0\gamma$

The mass number and atomic number of an element are not changed when it emits gamma radiation.​