Question

3. Valency of a radical/ion is same as the number of charges it carries.​

Answer 1

Answer:

Use Existing Chemical Formula

Count how many hydrogen atoms are in the formula. This is the valency of the radical. For example, H2SO4 has two hydrogen atoms, so the valency of sulfate is two. Because sulfate can bond with two positive hydrogen atom, its valency is the opposite charge and often expressed as 2-.