Which is the oxidation number of Aluminium?

The oxidation state 3+

It is widely known the fact that Aluminium is a chemical element in the boron group with symbol Al.  Keep in mind the fact that Aluminium has the atomic number 13. Everyone knows that Aluminium is a silvery white, soft, ductile metal.  The main idea is that Aluminum has three different oxidation states. 1+, 2+, and 3+. However, the main ides is that the most common state is 3+.  Needless to say, Aluminium is remarkable for the metal’s low density and for its ability to resist corrosion.