How to do valency please make me to understand what is valency and how to do valency
Answers
the electrons present in outer shell of an atom is known as valency
or the no. of electrons required for completing ictet configuration is known as valency
Valence refers to the number of electrons that an atom can either gain, lose or share with another atom to form chemical bonds. Low valence and high valence are terms that are used to describe the number of valence electrons that an atom possesses.
Low valence: Atoms with low valence have a small number of valence electrons, typically between 1 to 3. These atoms are highly reactive and can easily lose these electrons to form positive ions, or gain electrons to form negative ions. Examples of elements with low valence include alkali metals such as sodium and potassium, which have one valence electron, and alkaline earth metals such as calcium and magnesium, which have two valence electrons.
High valence: Atoms with high valence have a larger number of valence electrons, typically between 4 to 7. These atoms are less reactive and tend to form covalent bonds by sharing electrons with other atoms. Examples of elements with high valence include nonmetals such as oxygen and nitrogen, which have 6 and 5 valence electrons respectively, and halogens such as chlorine and fluorine, which have 7 valence electrons.
Understanding the concept of valence is important in understanding the chemical properties of elements and compounds, as it determines how atoms interact with each other to form chemical bonds. Atoms with low valence tend to form ionic bonds, while atoms with high valence tend to form covalent bonds.