1.

The pair of species with the same bond order is :A. `O_(2)^(2-), B_(2)`B. `O_(2)^(+) , NO^(+)`C. `NO,CO`D. `N_(2) , O_(2)`

Answer» Correct Answer - A
Bond order are `O_(2)^(2-) = 1.0, B_(2) = 1.0, O_(2)^(+) = 2.5 `
` NO^(+) = 3 NO = 2.5 , CO = 3, N_(2) = 3, O_(2) = 2 `
Thus , `O_(2)^(2-) and B_(2)` have tha same bond order viz 1.


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