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Britannica Sources used in this answer

Which group of the periodic table contains iodine?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
A labeled diagram highlights the periodic table entry for iodine, atomic number 53, symbol I, atomic weight 126.90447, and electron configuration. It shows iodine as a solid halogen with an orthorhombic crystal structure and strongly acidic higher-valence oxides, using color and shape keys for classification.
iodine

Iodine is a member of the halogen elements, which are located in Group 17 (also known as Group VIIa) of the periodic table.12