Cl

Chlorine

Z 17 35.45 g/molHalogen

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes

Group

17

Period

3

Block

p

Occurrence

Exploding massive stars 83%Exploding white dwarfs 16%Geochemical class: Lithophile

Biological Role

Humans: MacronutrientPlants: EssentialMicrobes: Essential

History

1774 (discovery, isolation)

Carl Wilhelm Scheele

Named By

Humphry Davy

Latin Name

Chlorum

Abundance

Solar System

x

Sun

x

Meteorites

x

Earth's crust

x

Oceans

x

Humans

x