JEE MainChemistryChemical Bonding and Molecular Structure
Which of the following sets of chemical species has the central atom with sp ^3, sp ^2 , and sp hybridization respectively?
Options
- ASO ₃, SO ₂ and N ₃⁻
- BClO ₃⁻, NO ₃⁻ and NO ₂⁺
- CPO ₄³⁻, CO ₃²⁻ and I ₃⁻
- DXeO ₃, NO ₂⁻ and I ₃⁺
Correct answer
B. ClO ₃⁻, NO ₃⁻ and NO ₂⁺
Step-by-step solution
The steric number (SN) is calculated as 1 2 (Valence electrons on central atom + Monovalent surrounding atoms - Cationic charge + Anionic charge). For ClO ₃⁻ : SN = 1 2 (7 + 0 - 0 + 1) = 4 sp ^3 hybridization. For NO ₃⁻ : SN = 1 2 (5 + 0 - 0 + 1) = 3 sp ^2 hybridization. For NO ₂⁺ : SN = 1 2 (5 + 0 - 1 + 0) = 2 sp hybridization. Checking the other options: SO ₃ is sp ^2 , I ₃⁻ is sp ^3 d , and I ₃⁺ is sp ^3 . Thus, only the set ClO ₃⁻, NO ₃⁻ and NO ₂⁺ matches the required sequence of sp ^3, sp ^2 , and sp . Answer: