Question

What are groups on the periodic table? How many are there?

Answer 1

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

Answer 2

Step-by-step explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.