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

Chemistry · JEE Main · NTA Exams — Atomic Structure

Which one of the following constitutes a group of the isoelectronic species?
  1. \(\mathrm{C}_{2}^{2-}, \mathrm{O}_{2}^{-}, \mathrm{CO}, \mathrm{NO}\)
  2. \(\mathrm{NO}^{+}, \mathrm{C}_{2}^{2-}, \mathrm{CN}^{-}, \mathrm{N}_{2}\)
  3. \(\mathrm{CN}^{-}, \mathrm{N}_{2}, \mathrm{O}_{2}^{2-}, \mathrm{CO}_{2}^{2-}\)
  4. \(\mathrm{N}_{2}, \mathrm{O}_{2}^{-}, \mathrm{NO}^{+}, \mathrm{CO}\)

Answer

(B) NO ^ + , C _ 2 ^ 2- , CN ^ - , N _ 2

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