The ion that is isoelectronic with CO is

Options

(a) CN⁻
(b) O₂⁺
(c) O₂⁻
(d) N₂⁺

Correct Answer:

CN⁻

Explanation:

We know that ions which have the same number of electrons are called isoelectronic.We also know that both CO and CN– have 14 electrons, therefore these are isoelectronic.