Question

State True or False.

First ionisation potential of $Mg$ is higher than that of $Al$.

• A. True
• B. False

Answer 1

The correct option is A True

The first ionization potential of Mg is higher than that of AI.

The outer electronic configuration of Mg is $3s^2$.
The outer electronic configuration of Al is $3s^{2}3p^1$

In the case of Al, an electron is to be removed from p orbital which requires less energy.
In case of magnesium, an electron is to be removed from an s orbital which requires higher energy.