Question

What is the valency & molecular formula of sulphate?​

Answer 1

Step-by-step explanation:

molecular formula of sulphate ion is SO₄²⁻

and

the valency of sulphate ion is 2.

Answer 2

Step-by-step explanation:

Let's consider sulphate radical, the chemical formula is given by SO42−. Here we can see there is a -2 charge on SO4, which means it has -2 valency. Now look at the option (a), phosphate can be written as PO43−. There is -3 charge on PO4, that means it has -3 valency.