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Which elements belong to Group 13 of the periodic table?

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A color-coded periodic table of the elements displays each element's symbol and atomic number, with categories such as alkali metals, noble gases, halogens, transition metals, and actinoid elements distinguished by different background colors. — boron group element Modern version of the periodic table of the elements (printable).

Group 13 of the periodic table, also known as the boron group, consists of the following six chemical elements:

Boron (B)
Aluminum (Al)
Gallium (Ga)
Indium (In)
Thallium (Tl)
Nihonium (Nh)

These elements are characterized by having three electrons in the outermost parts of their atomic structure.1