1.

Which one of the following is the correct statementA. `O_(2)` molecule has bond order 2 and is diamagneticB. `N_(2)` molecule has bond order 3 and is paramagneticC. `H_(2)` molecule has bond order zero and is diamagneticD. `C_(2)` molecules has bond order 2 and is diamagnetic

Answer» Correct Answer - D
`O_(2): K K sigma(2s)^(2)sigma^(**)(2s)^(2)sigma(2p_(z))^(2)pi (2p_(x))^(2)pi (2p_(y))^(2) pi^(**)(2p_(x))^(1)pi^(**)(2p_(y))^(1)`
Bond order =2, paramagnetic
`N_(2): K K sigma(2s)^(2)sigma^(**)(2s)^(2)pi (2p_(x))^(2)pi(2p_(y))^(2)sigma(2p_(x))^(2)`
Bond order =3, diamagnetic
`H_(2): sigma(1s)^(2)`
Bond order=1,diamagnetic
`C_(2): K K sigma(2s)^(2)sigma^(**)(2s)^(2))pi (2p_(x))^(2)pi(2p_(y))^(2)`
Bond order =2, diamagnetic
`He_(2)^(+): sigma (1s)^(2) sigma^(**)(1s)^(1)`
Bond order =1//2, paramagnetic


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