What Are the Elements in Groups 1a to 8a Called?

By Staff WriterLast Updated Mar 30, 2020 7:15:09 AM ET

The elements of the periodic table in groups 1A to 8A are called the main-group elements. They are sometimes also called the representative elements and they are the most abundant in the universe.

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Some of the main group elements have common names, such as the alkali metals (1A), the alkaline earths (2A), the halogens (7A) and the noble gases (8A). There also is a B group of transition metals that falls in between the 2A and 3A main groups. With the exception of hydrogen, the lanthanides and the actinides, all other elements are main-group elements. The lightest main-group elements are helium, lithium, beryllium, boron, carbon, nitrogen, oxygen and fluorine.