Metalloids are elements that exhibit properties of both metals and nonmetals. They are found in the periodic table along the dividing line between metals and nonmetals, forming a diagonal band.
Common metalloids include boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids typically have intermediate conductivity, allowing them to conduct electricity to some extent but not as effectively as metals.
They also often display a combination of metallic and nonmetallic physical and chemical properties, making them versatile in various applications.