# Is potassium iodide an ionic or covalent compound?

Aug 3, 2014

Potassium iodide is an ionic compound.

#### Explanation:

Potassium is in Group 1 of the Periodic Table. That means it is a metal.

Iodine is in Group 17 of the Periodic Table. That means it is a nonmetal.

Metals react with nonmetals to form ionic compounds.

A sodium atom transfers an electron to a chlorine atom to form a sodium ion and a chloride ion. The product is the ionic compound, sodium chloride.

In the same way, a potassium atom transfers an electron to an iodine atom to form a potassium ion and an iodide ion.

So, potassium iodide is an ionic compound.