The incorrect statement is - Vidyadip

MCQ

The incorrect statement is

A
The second ionisation energy of $Se$ is greater than that of second ionisation energy of $As$
B
The first ionisation energy of $C^{2+}$ ion is greater than that of first ionisation energy of $N^{2+}$ ion.
C
The third ionisation energy of $F$ is greater than that of third ionisation energy of $O$.
✓
Halogens have highest $I.E.$ in respective period.

✓

Answer

Correct option: D.

Halogens have highest $I.E.$ in respective period.

d
Nobel gases have highest $IE$ in their respective period

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