Alkali metals are powerful reducing agents, they give up one electron easily. They are extremely reactive.
metals electropositive, basicity, hard, ductile, malleable, sonorous nonmetals electronegative, acidic, brittle, and not all the other three properties.
Alkali metal forms Alkali while metals form bases.
The alkali metals all are shiny, silvery, soft, they have low densities, they can float on water, are very reactive and rarely found alone.
1 electron in their outer shell, very reactive and are shiny but they lose their shiny surface when exposed to air.