Questions
The unexpected order of acidic strength of the trihalides of boron can best be explained by
detailed solution
Correct option is A
The order of acidic strength of boron trihalides can be determined on the basis of back-bonding. Due to back-bonding, the electron-density is sent back to the boron atom by the filled orbitals. As a result, the Lewis acidity on boron atoms is reduced. But in case of congeners with ligand orbital 3p, 4p, etc i.e. the orbital overlap is not that much good. In such cases the extent of back-bonding decreases. Finally, the decrease in extent of back-bonding results in increase in Lewis acidity.Thus, the order of acidic strength of boron trihalides i.e. BR3 (where R is a halogen) is determined on the basis of back-bonding. Back-bonding is a type of resonance which increases stability. Back-bonding is responsible for reducing Lewis acidity on boron atoms.Talk to our academic expert!
Create Your Own Test
Your Topic, Your Difficulty, Your Pace
Similar Questions
Which of the following statement about boron carbide is wrong?
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests