All chemical elements

Symbol

F

Atomic number

9

Chemical property

Reactive nonmetal

Origin o the name

the Latin fluere, 'to flow'

Group

17

Period

2

Atomic weight (u)

18.998403

Atomic weight uncertainty (u)

0

Density (g/cm³)

0.001696

Melting point (K)

53.53

Boiling point (K)

85.03

Heat capacity (J/(g·K))

0.824

Electro-negativity

3.98

Abundance in earth's crust (mg/kg)

585