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How many valence electrons does an iodine atom have?

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Iodine has seven valence electrons. A valence electron is an electron in the outer shell of an atom that is able to participate in bonding. While iodine has 53 electrons, all but seven are in the inner shells of the iodine atom. read more

Iodine, as with all of the Halogens, has 7 valence electrons. This means that the nucleus has 7 electrons in its outer shell. The nucleus of any atom is positive and thus ‘holds’ the electrons in orbit. read more

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