Is Fe2O3, Iron (III) oxide. Ionic or Covalent?

Iron (III) oxide, Fe₂O₃, is ionic.

Imagine you have two kinds of blocks, red ones and blue ones. The red blocks are like oxygen atoms, and the blue ones are like iron atoms. In Fe₂O₃, each iron atom gives away three blue "happy faces" (like electrons), and each oxygen atom takes in two red "happy faces." This sharing of happy faces makes them stick together tightly, forming a special kind of bond called an ionic bond.

If you touch Fe₂O₃, like when you play with rust on a nail, it feels rough and grainy, just like salt or pepper. That's because it’s made up of tiny particles that don’t stick to each other in the same way as things like sugar or water.

This ionic bond means Fe₂O₃ doesn't conduct electricity well when it’s solid, but if you melt it or dissolve it in water, those particles can move around and carry electric current, just like how saltwater can light up a little bulb!