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

Options

A. `B_(2) and O_(2)^(2-)`
B. `NO^(+) and N_(2)`
C. `C_(2) and O_(2)`
D. All of these

Answer

D

Explanation

Check that only `NO^(+) and N_(2)` are isoelectronic and rest of the pairs are not. Obviously, both will have same bond order (check yourself from MO theory). `B_(2) and O_(2)^(2-),C_(2) and O_(2)` are not isoelectronic but have same bond order.