Question

Что обозначает термин валентности

Answer 1

Способность атома соединяться с определённым числом других атомов.

Answer 2

What does the term "valency" mean?

The term "valency" refers to the combining capacity or the number of chemical bonds that an atom of an element can form with other atoms. It is a measure of an atom's ability to gain, lose, or share electrons in order to achieve a stable electron configuration. Valency is determined by the number of valence electrons an atom has, which are the electrons in the outermost energy level of an atom.

The concept of valency is important in understanding chemical reactions and the formation of compounds. It helps predict how atoms will bond with each other to form molecules and compounds. The valency of an element can be determined by its position in the periodic table and the number of valence electrons it possesses.

For example, elements in Group 1 of the periodic table, such as hydrogen and lithium, have a valency of 1 because they have one valence electron and tend to lose that electron to achieve a stable electron configuration. Elements in Group 17, such as fluorine and chlorine, have a valency of 1 because they tend to gain one electron to achieve a stable electron configuration.

It's important to note that the concept of valency is different from the concept of oxidation state or charge. Valency refers to the number of bonds an atom can form, while oxidation state refers to the charge an atom carries in a compound.