How Reactive Are Alkali Metals?

Alkali metals are highly reactive at standard temperature and pressure and readily lose their outermost electron to form cations with charge +1. All the discovered alkali metals occur in nature.

Why are alkali metals so reactive?

Alkali metals are among the most reactive metals. This is due in part to their larger atomic radii and low ionization energies. They tend to donate their electrons in reactions and have an oxidation state of +1. ... All these characteristics can be attributed to these elements' large atomic radii and weak metallic bonding.

Which alkali metal is most reactive and why?

The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive. Because alkali metals are so reactive, they are found in nature only in combination with other elements.