JEE MainChemistryChemical Bonding and Molecular Structure
The correct decreasing order of bond orders of CN , CN ⁻ and CN ⁺ is
Options
- ACN ⁺ > CN > CN ⁻
- BCN ⁺ > CN ⁻ > CN
- CCN > CN ⁻ > CN ⁺
- DCN ⁻ > CN > CN ⁺
Correct answer
D. CN ⁻ > CN > CN ⁺
Step-by-step solution
Total number of electrons in CN = 6 + 7 = 13 . Bond order = 2.5 Total number of electrons in CN ⁻ = 6 + 7 + 1 = 14 . Bond order = 3 Total number of electrons in CN ⁺ = 6 + 7 - 1 = 12 . Bond order = 2 Therefore, the correct decreasing order of bond orders is CN ⁻ > CN > CN ⁺ . Answer: CN ⁻ > CN > CN ⁺