Boron is the only mettaloid in Group 13
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Boron is the only metalloid in group 13 of the periodic table. Aluminum, Gallium, Indium, and Thallium are metals.
Group 3a (13) on the periodic table contains boron which is considered a metalloid. The other elements in the group are post-transition metals.
Group 13 contain aluminium, gallium, indium, thallium, ununtrium (metals) and boron (nonmetal).
Argon is known to be non-metal. This forms in a group of 13 or more.
Carbon, Silicon (a metalloid), Germanium (a metalloid),