What group of elements is known as alkali metals?

Elements on the Periodic Table are grouped by columns.

Group

1 = Alkali metals

2 = Alkaline metals

3 - 12 = Transition Elements

17 = Halogens

18 = Noble Gases

For groups 13-16 there are miscellaneous diagonal groupings based on metal.

We have classifications of metals, metalloids, and non-metals

For the bottom 2 rows which are separated we have the Lanthanoids and the Actinoids.