Which of these Elements is a metalloid?

Antimony is considered a metalloid because it displays properties of both metals and nonmetals. While it is primarily a metallic element, it also exhibits some characteristics of nonmetals such as having a brittle nature and being a poor conductor of electricity. Additionally, antimony can form compounds with both metallic and nonmetallic elements. It falls within the metalloid category due to its intermediate properties between metals and nonmetals.