What is the order of stability of N2 and its ions?

Question

What is the order of stability of N2 and its ions? (A) N2 > N2+ = N2- > N22- (B) N+2 > N2- > N2 > N22- (C) N-2 > N2+ > N2 > N22- (D) N2-2 > N2- = N2+ > N2

Tardigrade Admin · Accepted Answer

Bond order of N2 = 3, N2+ = 2.5, N2-= 2.5 and N22- is 2. Higher the bond order, more is the stability.

Q. What is the order of stability of $N_{2}$ and its ions?

$N_{2} > N_{2}^{+} = N_{2}^{-} > N_{2}^{2 -}$

$N_{2}^{+} > N_{2}^{-} > N_{2} > N_{2}^{2 -}$

$N_{2}^{-} > N_{2}^{+} > N_{2} > N_{2}^{2 -}$

$N_{2}^{2 -} > N_{2}^{-} = N_{2}^{+} > N_{2}$

Bond order of $N_{2} = 3$ ,
$N_{2}^{+} = 2.5$ ,
$N_{2}^{-} = 2.5$ and $N_{2}^{2 -}$
is $2$ . Higher the bond order, more is the stability.

Q. What is the order of stability of N2​ and its ions?

N2​>N2+​=N2−​>N22−​

N2+​>N2−​>N2​>N22−​

N2−​>N2+​>N2​>N22−​

N22−​>N2−​=N2+​>N2​