Question

Explain the following :

Boron trichloride has triangular planar geometry whereas aluminium trichloride has tetrahedral dimeric structure.

• A. 0

Answer 1

The correct option is A 0
$BC{l}_3$ exist in monomer form

(i) $Cl-\underset{Cl}{\underset{|}{B}}-Cl$

$s{p}^2$, trigonal planer

$AlC{l}_3$ exist in dimer form -$A{l}_{2}C{l}_6$