Answer :
Metalloids, including silicon, have A. properties that are intermediate between metals and nonmetals which make them unique. They are semiconductors and display mixed chemical behaviors.
The physical and chemical properties of metalloids, such as silicon, are unique in that they share characteristics with both metals and nonmetals. Metalloids can be found along the border between metals and nonmetals on the periodic table. These elements often appear metallic, but they do not conduct electricity as well as metals, making them valuable as semiconductors.
The chemical behavior of metalloids is intermediate, not forming typical metallic anions, yet forming covalent crystals similar to nonmetals. Therefore, the correct answer to the question is A. Metalloids have some of the physical and chemical properties of both metals and nonmetals.
