17

Cl

Chlorine

35.446

Halogen
Gas

Discovery

Scheele, Carl Wilhelm (1774)

Etymology

Greek

Meaning

Pale green

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Orthorhombic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Gas

Melting point

  (at 101.325 kPa)

-101.0 °C

172.15 K

Boiling point

  (at 101.325 kPa)

-35.0 °C

238.15 K

Density

  (at 21 °C and 101.325 kPa)

3.21 g/cm3

Electronegativity

3.16