Arsenic is classified as a metalloid. This means that it possesses properties that are intermediate between metals and nonmetals. Metalloids typically have a mix of characteristics; they can conduct electricity better than nonmetals but not as well as metals. Arsenic, for instance, exhibits semiconductor properties, which makes it useful in certain electronic applications.
Moreover, arsenic is located in group 15 of the periodic table, also known as the nitrogen group. The elements in the same group as arsenic include nitrogen (N), phosphorus (P), antimony (Sb), and bismuth (Bi). Each of these elements shares similar chemical properties, such as the ability to form covalent bonds and varying oxidation states. However, their physical properties can differ significantly, with arsenic being the most notable metalloid in the group.