Why alkali metals do not form dipositive ions?

Alkali metals

• The elements lithium, sodium, potassium, rubidium, cesium, and francium are present in Group 1 of the Periodic Table.
• They are collectively known as alkali metals.
• The general electronic configuration of alkali metals is $\left[\text{noble gas}\right]n{s}^1$.

Valency of alkali metals

• Only one electron is present in the valence shell of alkali metals.
• They rapidly lose an electron, resulting in monovalent ${\text{M}}^{+}$ ions.
• So, alkali metals do not form dipositive ions.