Question

An emission of $\beta -particle$ increases the atomic number of parent element by :

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is A 1

An emission of $\beta -paticle$ increases the atomic number of parent element by 1. This is because a neutron is converted into proton.
${}_0^{1}n{\to }_1^{1}H{+}_{-1}^{0}e$
${}_{11}^{24}Na{\to }_{12}^{24}{+}_{-1}^{0}e$