The incorrect statement among the following

Options

A. The first ionisation potential of `Al` is less than the first ionisation potential of `Mg`
B. The second ionisation potential of `Mg` is greater than the second ionisation potential of `Na`
C. The first ionisation potential of `Na` is less thasn the first ionisation potential of `Mg`
D. The third ionisation of `Mg` is greater than third ionisation potential of `Na`

Answer

B, C, D

Explanation

(a) Correct statement: In a period, element of 2nd group has higher first ionisation potential than element of group 13.
(b) Incorrect statement : `Mg^(+)` require less energy for further ionisation than `Na^(+)` because of noble gas configuration of `Na^(+)`
(c) Correct statement: Ionisation energy increases from left to right in a period.
(d) Correct statement `Mg^(2+)` has noble gas configuration, require greater energy for further ionisation than `Na^(2+)`