Iodine

Atomic Number: 53

Name: Iodine

Atomic symbol: I

Atomic Weight: 126.905

Electron affinity: -295 kJ/mol

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁵

Ionization energies: 1008 kJ/mol

Pauling electronegativity: 2.5

Melting Point: 114^oC

Boiling Point: 184^oC

Density: 4.93 g/cm³

Standard potential (volts), X₂ + 2e^- ---> X^2-: 0.54

Covalent radius: 1.33angstroms

Ionic radius: 2.06 angstroms (-1); 0.62 angstroms (+5); 0.50 angstroms (+7)

Van Der Wall's radius: 2.15 angstroms

Common oxidation states in compounds: -1, +1, +5, +7