1.

The number of anti - bonding electrons present in O_(2)^(-) molecular ion is :

Answer»

8
7
5
4

Solution :`O_(2)^(-):KK(SIGMA2S)^(2)(sigma^(**)2s)^(2)(sigma2p_(Z))^(2)(pi2p_(X))^(2) (pi2p_(y))^(2)(pi^(**)2p_(x))^(2)(pi^(**)2p_(y))^(1)`
No, of electrons in antibonding orbitals = 5 (excluding inner orbitals = KK).


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