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: -101^oC

Boiling Point: -35^oC

Density: 3.21 x 10^-3 g/cm³

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