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Which molecular out of the following does not contain unpaired electrons ?A. `N_(2)^(+)`B. `O_(2)`C. `O_(2)^(2-)`D. `B_(2)` |
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Answer» Correct Answer - C `N_(2)^(+) = KK sigma_(2s)^(2) sigma_(2s)^(**2) pi_(2_(p_(x)))^(2) pi_(2_(p_(y)))^(2) sigma_(2_(p_(z)))^(1)` `O_(2) = KK sigma_(2s)^(2) sigma_(2s)^(**2) sigma_(2p_(z))^(2) pi_(2_(p_(x)))^(2) pi_(2_(p_(y)))^(2) pi_(2_(p_(x)))^(**1) pi_(2_(p_(y)))^(**1) ` `O_(2)^(2-) = KK sigma_(2s)^(2) sigma_(2s)^(**2) sigma_(2p_(z))^(2) pi_(2_(p_(x)))^(2) pi_(2_(p_(y)))^(2) pi_(2_(p_(x)))^(**2) pi_(2_(p_(y)))^(**2) ` `B_(2) = KK sigma_(2s)^(2) sigma_(2s)^(**2)pi_(2_(p_(x)))^(1) pi_(2_(p_(y)))^(1) ` thus , `O_(2)^(2-)` has no unpaired electrons. |
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