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HOME > Protocols > Reference Material > Periodic Table > Chlorine
Chlorine

Atomic Number: 17

Name: Chlorine

Atomic symbol: Cl

Atomic Weight: 35.453

Electron affinity: -349 kJ/mol

Electron configuration: 1s22s22p63s23p5

Ionization energies: 1,251 kJ/mol

Pauling electronegativity: 3.0

Melting Point: -101oC

Boiling Point: -35oC

Density: 3.21 x 10-3 g/cm3

Standard potential (volts), X2 + 2e- ---> X2-: 1.36

Covalent radius: 0.99 angstroms

Ionic radius: 1.67 angstroms (-1); 0.34 angstroms (+5); 0.27 angstroms (+7)

Van Der Wall's radius: 1.8 angstroms

Common oxidation states in compounds: -1, 0, +1, +3, +5, +7

Previous: Atomic Number 16 - Sulfur


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