Which is the correct order of second ionizati | vedclass

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Question

(B) The second ionization potential involves the removal of an electron from a unipositive cation $(M^+)$.The electronic configurations of the cations

Vedclass · Accepted Answer

$O > F > N > C$

Vedclass · Answer

(B) The second ionization potential involves the removal of an electron from a unipositive cation $(M^+)$.The electronic configurations of the cations are:$C^+ (Z=6): 1s^2 2s^2 2p^1$$N^+ (Z=7): 1s^2 2s^2 2p^2$$O^+ (Z=8): 1s^2 2s^2 2p^3$$F^+ (Z=9): 1s^2 2s^2 2p^4$Ionization potential increases with effective nuclear charge across a period.However,$O^+$ has a stable half-filled $2p^3$ configuration,which makes it harder to remove an electron compared to $F^+$.Thus,the order of second ionization potential is $O > F > N > C$.

Which is the correct order of second ionization potential of $C, N, O$ and $F$ in the following?

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