Question

How is the valency of a radical determined? Give examples.​

Answer 1

Answer:

For example, to determine the valency of the sulfate radical, consider hydrogen sulfate: H2SO4. 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.

Answer 2

Explanation:

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-.