What is the valence of chemical elements? Explain why the valency of hydrogen is taken as a unit?

The exact position of the electron cannot be determined, but only with a certain probability at any point in space. An electron has a fixed energy and a certain spatial distribution. This distribution is called the orbital.

We will give an explanation only for the atomic orbital. An atomic orbital is a one-electron wave function that describes the behavior of electrons in an atom.

How does a molecule of atoms bind? So that’s it. When a molecule is formed, the binding of two atoms occurs through electrons located in the atomic orbital. That is, valence electrons are electrons that are located on the valence layers of an atom. In other words: valence is something like the ability to bind atoms into a molecule.

If we consider the electronic formula of hydrogen (1s1), we will see that it has only one electron in its valence orbital. Therefore, its valence is equal to one.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.