Question

Isoelectronic pair among the following is
co and CN
0 N, and O2
0 F2 and 02
o
NO and Co​

Answer 1

And is option a . but theres a little mistake in option a. it sud be co and cn- .

I have attached an image above for reference. Just calculate the valence electron and add the signs ( + or - ) if any

here,

co = 4+6 = 10

cn- = 4+5+1 = 10

hope it helped