Question

which one of the following ion is isoelectronic to CN-
a. O2+
b. S
c. CO
d. F2-​

Answer 1

Answer:

A. O2+ is correct answer..........

Answer 2

Out of the given ions CN⁻ is the ion which has 14 electrons (6 from carbon, 7 from nitrogen and 1 from the negative charge). Thus CN⁻ ion is isoelectronic with CO.

So, CO is the correct answer.