Most Important Selected Qs for JEE AdvancedChemistryChemical Bonding and Molecular Structure
Select the correct statement(s) about the compound NO [ BF ₄ ] :
Options
- AIt has 5 and 2 bond
- BNitrogen-oxygen bond length is higher than in nitric oxide (NO)
- CIt is a diamagnetic species
- DB-F bond length in this compound is lower than in BF ₃
Correct answer
C. It is a diamagnetic species
Step-by-step solution
NO ⁺ [ BF ₄ ]⁻ No. of bonds in [ BF ₄ ]⁻=4 B.O. of NO ⁺=3.0 , i.e., one sigma bond and two bonds No. of bonds =2 No. of bond =5 B.O. of NO ⁺=3.0 and B.O. of NO =2.5 NO ⁺ is diamagnetic and BF ₄⁻ is also diamagnetic B- F bonds are longer in BF ₄⁻ than in BF ₃ due to absence of p - p back bonding in [ BF ₄⁻ ] .