Which of the following is the least basic?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The basicity of boron trihalides $(BX_3)$ depends on the extent of $p\pi-p\pi$ back-bonding between the halogen atom and the boron atom. In $BF_3$

Vedclass · Accepted Answer

$BF_3$

Vedclass · Answer

(D) The basicity of boron trihalides $(BX_3)$ depends on the extent of $p\pi-p\pi$ back-bonding between the halogen atom and the boron atom. In $BF_3$,the fluorine atom has a small size and its $2p$ orbitals overlap effectively with the empty $2p$ orbital of boron,leading to the strongest back-bonding. This reduces the electron-deficient nature of boron,making $BF_3$ the least basic among the given trihalides. Therefore,the order of basicity is $BF_3 < BCl_3 < BBr_3 < BI_3$.

Similar Questions

$AlCl_3$ on hydrolysis gives:

The element that combines with oxygen to give an amphoteric oxide is

Which of the following substances imparts a green color to the burner flame?

Which of the following equations is not correctly matched?

Why does boron trifluoride $(BF_3)$ behave as a Lewis acid?

Vedclass Test Series

Exam Paper Generator

Online Exam Module