* Electronic Configuration: Iodine has 53 electrons, with the outermost shell configuration being 5s² 5p⁵. This means it has seven electrons in its valence shell (outermost shell).
* Halogens: Elements in Group 7, also known as halogens, are characterized by having seven valence electrons. This makes them highly reactive, as they tend to gain one electron to achieve a stable octet configuration.
* Similar Properties: Iodine shares many properties with other halogens, including:
* High electronegativity: They are highly electronegative, meaning they attract electrons in a bond.
* Reactivity: They are highly reactive, particularly with metals, forming ionic compounds.
* Formation of Diatomic Molecules: They exist as diatomic molecules (e.g., I₂, Cl₂) in their elemental state.
Therefore, due to its electronic configuration and similar chemical properties to other halogens, iodine is categorized as a Group 7 element.
