chemical database


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Chlorine_gas

Formula:
Illustrative compounds

Main:

17Cl
Periodic table


Appearance

pale yellow-green gas

General properties

Name, symbol, number
chlorine, Cl, 17

Pronunciation
/ˈklɔəriːn/ KLOR-een

Element category
Halogen

Group, period, block
17,3, p

Standard atomic weight
35.453g·mol−1

Electron configuration
[Ne] 3s2 3p5

Electrons per shell
2, 8, 7 (Image)

Physical properties

Phase
gas

Density
(0 °C, 101.325 kPa)
3.2 g/L

Liquid density at b.p.
1.5625 g·cm−3

Melting point
171.6K, -101.5°C, -150.7°F

Boiling point
239.11K, -34.04°C, -29.27°F

Critical point
416.9 K, 7.991 MPa

Heat of fusion
(Cl2) 6.406 kJ·mol−1

Heat of vaporization
(Cl2) 20.41 kJ·mol−1

Specific heat capacity
(25 °C) (Cl2)
33.949 J·mol−1·K−1

Vapor pressure



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