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Britannica Sources used in this answer

Which group of elements includes arsenic?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
A labeled diagram of the periodic table entry for arsenic, showing its atomic number 33, symbol As, atomic weight 74.921595, electron configuration, and classification as an other nonmetal. Additional icons indicate arsenic is solid at room temperature, has a rhombohedral crystal structure, and weakly acidic oxides.
arsenic Properties of arsenic.

Arsenic is a chemical element that belongs to the nitrogen group, which is Group 15 (Va) of the periodic table.1

Additionally, because it exhibits properties intermediate between those of metals and nonmetals, arsenic is classified as a metalloid.2