Phosphorus and fluorine form a covalent compound, phosphorus trifluoride. Complete the sentences below which are about this compound.
Phosphorus trifluoride is made up of phosphorus and fluorine
to
These are joined together by sharing pairs of
form phosphorus trifluoride

Valence electrons

Explanation:

The formation of phosphorus trifluoride is orchestrated by the sharing of the valence electrons between phosphorus and fluorine.

This is called covalent bonding. In covalent bonding, elements with zero or very small electronegativity combines together. Such bonding occurs between non-metals.

For this bond to form, phosphorous shares its 5 electrons with the 3 of the fluorine.