Elements having 3 or fewer electrons in the outer energy level are classified as ____________________.
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To find the answer to this question, we need to determine which elements have 3 or fewer electrons in their outer energy level.
The outermost energy level of an element is also known as the valence shell, and it determines the element's chemical properties. Electrons in the valence shell are involved in chemical bonding and can be donated, accepted, or shared with other atoms.
Elements that have 3 or fewer electrons in their outer energy level belong to the group known as the "Group 3 elements" or "Group III elements" on the periodic table. This group is also sometimes referred to as the "group of Boron" since boron is the first element in this group.
The Group 3 elements include boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl). These elements have 3 valence electrons.
Therefore, elements having 3 or fewer electrons in the outer energy level are classified as "Group 3 elements" or "Group III elements," with boron being the first element in this group.