Question

Is P2I4 or Diphosphorus tetraiodide covalent or ionic?

Answer 1

Answer: covalent bond.

Explanation:

A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.

As $P_2I_4$ or Diphosphorus tetraiodide is made up of phosphorous and iodine which are both non metals , it is a covalent bond.

Answer 2

Diphosphorus tetraiodide  is a covalent compound.

It has low melting point as compared to ionic compounds

It is a rare compound where the oxidation state of Phosphorous is +2.

It is also termed as subhalide of phosphorous.