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HOME > Protocols > Reference Material > Periodic Table > Iodine

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: 114oC

Boiling Point: 184oC

Density: 4.93 g/cm3

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

Previous: Atomic Number 52 - Tellurium


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