For a stable molecule the value of bond ...

For a stable molecule the value of bond order should be

negative

positive

zero

either (A) or (C)

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The distribution of electrons among molecular orbitals is called the electronic configuration of the molecule which provides us the following very important informations about the molecule. (A)Stability of molecule : The molecule is stable if number of bonding moleculer orbital electrons (N_b) is greater than the number of antibonding molecular orbital electrons (N_a) . (B) Bond order : Bond order =1/2(N_b-N_a) A positive bond order means a stable molecule while a negative or zero bond order means an unstable molecule. ( C)Nature of the bond : Bond order 1,2 and 3 corresponds to single , double and triple bonds respectively. (D)Bond length: Bond length decreases as bond order increases. (E)Magnetic nature: Molecular orbitals in a molecule are doubly occupied , the substance is diamagnetic and if one or more molecular orbitals are singly occupied, it is paramagnetic. N_2 has greater dissociation energy than N_2^+ , where as O_2 has a lower dissociation energy than O_2^+ because

The molecule which has highest bond order is

Which our of O_(2)^(+)and O_(2)^(-) is more stable on the basis of bond order calculations ?

Select stable molecule(s)

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