Question

Which of the following will be planar trigonal ?

• A. $PC{l}_3$
• B. $N{H}_3$
• C. $Cl{F}_3$
• D. $AlC{l}_3$

Answer 1

Answer: (D)

In $AIC{I}_3$ molecule, central Al-atom is $s{p}^2$ hybridised
H = $\frac{1}{2}$ [ 3 + 3 - 0 + 0 ] = 3 .