Final answer:
There is one metalloid in Group 13, two metalloids in Group 14, and three metalloids in Group 15 of the periodic table.
Step-by-step explanation:
Metalloids are elements that possess both properties of metals and nonmetals. In Group 13 of the periodic table, there is one metalloid, which is Boron (B). Group 14 contains two metalloids, which are Silicon (Si) and Germanium (Ge). In Group 15, there are three metalloids, which are Arsenic (As), Antimony (Sb), and Polonium (Po).
Learn more about Metalloids in the periodic table