How aluminium oxide form ? tell how much you know

1.	How aluminium oxide form ? tell how much you know
Answer» Aluminium Oxide is a chemical compound of OXIGEN and Aluminium. It's formula is *Al2O3*. In its most commonly occurring crystalline form, called corundum or α-aluminium oxide, its HARDNESS makes it SUITABLE for use as an ABRASIVE and as a component in cutting tools. Al2O3 is an electrical insulater but has a relatively high thermal conductivity for a CERAMIC material. Aluminium oxide is insoluble in water.

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