Periodic Table of the Elements: Iodine

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Periodic Table of the Elements: Iodine
Atomic Number:53
Atomic Symbol:I
 Iodineiodine
[Gr.,=violet], nonmetallic chemical element; symbol I; at. no. 53; at. wt. 126.90447; m.p. 113.5&degC;; b.p. 184.35&degC;; sp. gr. 4.93 at 20&degC;; valence −1, +1, +3, +5, or +7.
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Atomic Weight:126.90447
Electron Configuration:2 · 8 · 18 18 · 7