iodine

Atomic number: 53
Atomic weight: 126.90447
Symbol: I
Group number: 17
Electronic configuration: [Kr].4d¹⁰.5s².5p⁵

Physical data

Standard state: solid at 298 K
Colour: violet-dark grey, lustrous
Density of solid at ambient temperature/kg m-3: 4660
Molar volume/cm3: 25.72

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