Which one of the following constitutes a group of the is electronic species ?

Options

A. `C_2^(2-) , O_2^-, CO, NO`
B. `No^+ ,C_2^(2-) , CN^-, N^_2`
C. ` CN^- , N_2 , O_2^(2-) , C_2^(2-)`
D. ` N_2 , O_2^- , NO^+ CO`

Answer

B

Explanation

` NO^+ , C_2^(2-) CN^(-) ` and ` N_2` all have `14` electrons.