Question

electronic configuration of Aluminium is 2,8,3 and oxygen is 2,6 the valency of this element and write the chemical formula of Aluminium oxide​

Answer 1

Answer:

Al203 is the formula of aluminium oxide

valency of aluminium-3

valency of oxygen-2

cross multiplying

Answer 2

Answer:

Al₂O₃

Explanation:

The valency of Al = 3

The valency of O = 2

Criss-cross valencies;

therefore, final formula:

Al₂O₃