Which of the following pairs have identical value of bond order?

Options

A. `N_(2) and O_(2)^(2-)`
B. `NO^(+) and N_(2)`
C. `CN^(-) and O_(2)^(-)`
D. `CO and O_(2)`

Answer

B

Explanation

Apply MOT, bond order = 1/2 (Bonding electrons ­– anti bonding electrons).