Question

Aluminium has a valence 3 and


Sulphate has
valence of 2. therefore the correct formula for aluminium sulphate is

​

Answer 1

Answer :-

As we know that valency of both the elements cross-sect each other.

Valency of Aluminum = 3

Valency of Sulphate = 2

Al SO4

×

3 2

Al2(SO4)3