JEE MainChemistryChemical Bonding and Molecular Structure
Which of the following sequences of nitrogen-containing species strictly follows the hybridization order sp , sp ^2 , and sp ^3 at the central nitrogen atom?
Options
- ANO ₂⁻, NO ₃⁻, NH ₃
- BNO ₃⁻, NO ₂⁺, NH ₄⁺
- CNO ₂⁺, NO ₃⁻, NH ₄⁺
- DNO ₂⁺, NO ₂⁻, NO ₃⁻
Correct answer
C. NO ₂⁺, NO ₃⁻, NH ₄⁺
Step-by-step solution
The hybridization of the central atom can be determined using the Steric Number (SN). SN = 1 2 (Valence electrons on central atom + Number of monovalent atoms - Cation charge + Anion charge). For NO ₂⁺ : SN = 1 2 (5 + 0 - 1 + 0) = 2 sp hybridization. For NO ₃⁻ : SN = 1 2 (5 + 0 - 0 + 1) = 3 sp ^2 hybridization. For NH ₄⁺ : SN = 1 2 (5 + 4 - 1 + 0) = 4 sp ^3 hybridization. Thus, the sequence NO ₂⁺, NO ₃⁻, NH ₄⁺ represents sp , sp ^2 , and sp ^3 hybridizations respectively. Answer: NO ₂⁺, NO ₃⁻, NH ₄⁺