Question

What is the valency of ${\mathrm{H}}_2{\mathrm{SO}}_4$?

Answer 1

Valency

• The valency of an atom refers to its ability to combine with other atoms.
• The valency of an element determines the number of bonds that an atom can make as part of a complex.
• The electrons that are present in the atom's outermost orbit are known as valence electrons.

Valency of ${\mathrm{H}}_2{\mathrm{SO}}_4$

• In ${\mathrm{H}}_2{\mathrm{SO}}_4$, sulphur is the central atom.
• It has a valency of $6$since it contains $2$ hydrogen and $4$ oxygen atoms.
• With its neighbors, sulfur forms six covalent connections.
• The $\mathrm{H}$ has a value of $+1$ and there are two of them, making a total of $+2$.
• The $\mathrm{O}$ has a value of $-2$, and there are four of them, so the total charge will be $-8$.
• In order for the compound to be neutral, $\mathrm{S}$ must be $+6$.

Thus, the valency of ${\mathrm{H}}_2{\mathrm{SO}}_4$ is $+6$.