Question

Which one of the following constitutes a group of the isoelectronic species?

(a) C₂^2-, O₂^-, CO, NO 

(b) NO⁺, C₂^2-, CN^-, N₂

(c) CN_-,N₂,O₂^2-,CO₂^2-

(d) N₂, O₂^-, NO⁺, CO

Answer 1

Correct option (b) NO⁺, C₂^2-, CN^-, N₂

Explanation:

Isoelectronic species have same number of electrons, NO⁺, C₂^2-, CN^- and N₂ all have 14 electrons.