Explore: Metalloids

line between metals and nonmetals, and the metalloids may be found close to this line. Typical metalloids have a metallic appearance, may be brittle and

Some consider metalloids distinct from both metals and nonmetals, while others classify them as nonmetals. Some categorize certain metalloids as metals (e

sources that list elements classified as metalloids. The sources are listed in chronological order. Lists of metalloids differ since there is no rigorous widely

intermediate metalloid category. Some authors count metalloids as nonmetals with weakly nonmetallic properties. Others count some of the metalloids as post-transition

the only one having all three types of elements: metals, nonmetals, and metalloids. The p-block elements can be described on a group-by-group basis as: group

densities, atomic weights, or atomic numbers. The criteria used, and whether metalloids are included, vary depending on the author and context, and arguably,

the transition metals to their left and the chemically weak nonmetallic metalloids to their right have received many names in the literature, such as post-transition

should be considered a metalloid – though this situation also holds for phosphorus, which is a much rarer inclusion among the metalloids. There are some other

tellurium – gray-black or brown powder Crystalline tellurium – hexagonal crystalline structure (metalloid) (similar chemical properties with selenium)

Sb (from Latin stibium) and atomic number 51. A lustrous grey metal or metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3)