Order of second ionisation potential of C, N, O and F is :

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C > N > O > F

O > N > F > C

O > F > N > C

F > O > N > C

answer is C.

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Detailed Solution

The correct order of 2nd I.E. wil be O > F > N > C ;IP1 trend ….Li < B < Be < C < O < N < F < Ne ;IP2 trend….Be < C < B < N < F < O < Ne < Li ;

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