Answer: 1. The mass number is reduced by 4 units and atomic number is reduced by 2 units
2. Mass number remains same but the atomic number is increased by 1.
Explanation:
Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.
[tex]_A^Z\textrm{X}\rightarrow _{A-2}^{Z-4}+_2^4\alpha[/tex]
Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as [tex]\beta ^-[/tex]-decay. In this the mass number remains same but the atomic number is increased by 1.
[tex]_A^Z\textrm{X}\rightarrow _{A+1}^Z\textrm{Y}+_{-1}^0e[/tex]
