Periodic table of the elements
OxygenFluorineNeon
9
F
Fluorine
18.9984032
2
7
9
F
Fluorine
18.9984032
2
7
General
NameFluorine
SymbolF
Number9
Chemical seriesHalogens
Group / Period17 / 2
Blockp-block
CAS registry number7782-41-4

Physical properties
Stategas
Density1.7 g/L
Melting point53.53 K (-219.62°C, -363.32°F)
Boiling point85.03 K (-188.12°C, -306.62°F)
Critical point144.13 K, 5.172 MPa

Atomic properties
Atomic Weight18.9984032 g/mol
Crystal structurecubic
Electronegativity3.98
Atomic radius50 pm
Atomic radius (calculated)42 pm
Electron configuration[He] 2s2 2p5
Electrons per shell2, 7
Number of protons9
Number of neutrons10

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Periodic table of the elements
OxygenFluorineNeon