Question

Phosphorus forms both trihalides $\left(P{X}_3\right)$ and pentahalides $\left(P{X}_5\right)$ where X = F Cl Br and I. True or False?

• A. True
• B. False

Answer 1

The correct option is B

False

Phosphorus forms two types of halides

1. Pentahalides of the form $\left(P{X}_5\right)$ where X = F Cl Br.
2. Trihalides of the form $\left(P{X}_3\right)$ where X = F Cl Br and I

Iodine atom is probably too large to exist in a $P{I}_5$ structure around the central Phosphorus atom.