Question

How are anions formed?

Answer 1

Formation of Anions:

1. Atoms are electrical neutral.
2. When the atoms gain electrons, negatively charged ions are formed.
3. Theses negatively charged ions are known as anions.

Example:

1. Fluorine atom forms $\mathbf{\left(}{\mathbf{F}}^{\mathbf{-}}\mathbf{\right)}$ anion on gaining one electron in the outermost shell.