Question

atoms, are organized into elements on the periodic table. elements are grouped into vertical columns based on their number of valence electrons. these groups of elements, with the same number of outermost electrons, have similar properties. the periodic table is organized by families of elements, whose group members have similar characteristics due to the same number of valence electrons. the five main families on the periodic table are alkali metals, alkaline earth metals, transition metals, , and noble gases. halogens inner liquids periods sizes

Explanation:

The five main families of elements on the periodic table include alkali metals, alkaline - earth metals, transition metals, halogens, and noble gases. Halogens are a well - known family of elements in the periodic table.

Answer:

halogens