Well, several are, and from left to right.
Alkali metals
Alkaline earth metals.
Transition metals.
Metaloids.
Nonmetals.
Halogens.
Nobel gasses.
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In chemistry, a group (also known as a family) is a vertical column in the periodic table of the chemical elements. There are 18 groups in the standard periodic table.
alkali metals, halogens, noble gases
Families (or groups) are the vertical columns of the periodic table. Period is horizontal rows.
The vertical columns.
The main families of the periodic table are the alkali metals, the alkaline earth metals, the halogens, and the noble gasses. see them here to view where they are one the periodic table.. hopefully this answers your question.