Home Chemistry Classification of Elements and Periodicity HARD The correct order of second ionization poten…
Chemistry Classification of Elements and Periodicity HARD Single Correct MCQ
Published on: August 12, 2026

The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is

A
C > N > O > F
B
O > N > F > C
C
O > F > N > C
D
F > O > N > C

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Text Solution

Verified by Experts
The correct answer is:
C

The ionization potential increases across the period but the second ionization potential of oxygen is highest among them because after the removal of 1 the 2 is to be removed from half filled orbital which is difficult.

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