Question

The molecule having smallest bond angle is

• A. $NC{l}_3$
• B. $AlC{l}_3$
• C. $SbC{l}_3$
• D. $PC{l}_3$

Answer 1

Answer: (C)

$SbC{l}_3$

Here,

$NC{l}_3$ → trigonal pyramidal → ${107}^o$

$ASC{l}_3$→ trigonal pyramidal → ${109}^o$

$SbC{l}_3$ → pyramidal → ${97.2}^o$

$PC{l}_3$ → trigonal pyramidal → about ${109}^o$

Hence $SbC{l}_3$ has smaller bond angle is 97.2%.