Iodine

Halogen

Symbol: I

Atomic Number: 53

Standard State: Solid

Atomic Mass: 126.9045

Electron Configuration: [Kr]5s2 4d10 5p5

Electronegativity: 2.66

Atomic Radius: 198

Ionization Energy: 10.451

Melting Point: 386.85

Boiling Point: 457.55

Density: 4.93

Year Discovered: 1811