Question

Iodide	$P{I}_3$	$As{I}_3$	$Sb{I}_3$
Bond angle	102	${100}^o{2}^{\prime }$	${99}^o$

The bond angle is maximum in $P{I}_3$, which is:

• A. due to small size of $P$
• B. due to more bp - bp repulsion in $P{I}_3$
• C. due to less electronegativity of $P$
• D. none of the above

Answer 1

Answer: (B)

due to more bp - bp repulsion in $P{I}_3$

Among $P,As$ and $Sb,P$ is the most electronegative element, due to this, there is more bp-bp repulsion.