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In which of the following transformations, the bond order has increased and the magnetic behaviour has changed?
$C^+_2 \to C_2$
$NO^+ \to NO$
$O_2 \to O^+_2$
$N_2 \to N^+_2$
Solution
$(a)$ $\mathop {\mathop {C_2^ + }\limits_{BO = 1.5} }\limits_{Paramagnetic} \to \mathop {\mathop {{C_2}}\limits_{BO = 2} }\limits_{Diamagnetic} $
$(b)$ $\mathop {\mathop {N{O^ + }}\limits_{BO = 3} }\limits_{Diamagnetic} \to \mathop {\mathop {NO}\limits_{BO = 2.5} }\limits_{Paramagnetic} $
$(c)$ $\mathop {\mathop {{O_2}}\limits_{BO = 2} }\limits_{Paramagnetic} \to \mathop {\mathop {O_2^ + }\limits_{BO = 2.5} }\limits_{Paramagnetic} $
$(d)$ $\mathop {\mathop {{N_2}}\limits_{BO = 3} }\limits_{Diamagnetic} \to \mathop {\mathop {N_2^ + }\limits_{BO = 2.5} }\limits_{Paramagnetic} $
