Question

What is the Oxidation Number of ${{H}^{+}}$?

Answer 1

In simple terms, the oxidation number is the number assigned to elements in a chemical combination. The oxidation number is the total number of electrons that atoms in a molecule can share, lose, or gain while forming chemical bonds with atoms of a different element.

Complete answer:
In general, oxidation state or number aids in the description of electron transfer. However, students should be aware that it is not the same as a formal charge, which determines the arrangement of atoms. The oxidation number or state is also used to calculate the changes in redox reactions. In the meantime, it is very similar to valence electrons.
The charge that an atom appears to have when forming ionic bonds with other heteroatoms is defined as its oxidation number. A negative oxidation state is assigned to an atom with a higher electronegativity (even if it forms a covalent bond).
The oxidation number of elemental hydrogen ${{H}_{2}}$ is $0$. The oxidation number of chlorine in hydrogen chloride is $-1$. The oxidation number, also known as the oxidation state, is the total number of electrons that an atom receives or loses to form a chemical bond with another atom.
The term oxidation was coined by Antoine Lavoisier to describe the reaction of a product with oxygen. Much later, it was discovered that the product loses electrons when oxidized, and the meaning was expanded to include other reactions in which electrons are lost, regardless of whether oxygen is present.
Thus, The Oxidation Number of ${{H}^{+}}$ is $0$.

Note:
The normal method of calculating the oxidation state of an atom assumes that all of the same atoms are equal and yields only an average of the different oxidation states of the same atom in the molecule. The average oxidation state is mostly a fraction rather than a whole number.