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Fluorine
SEE PERIODIC TABLE
SEE FULL ARTICLE
Atomic Number
9
Atomic
Symbol
F
Atomic Weight
18.9984032 amu
Group
Halogen, 17
Form
Gas
Density
@
STP
1.667 g/L
Melting Point
-219.66 °C (-363.39 °F, 53.49 °K)
Boiling Point
-188.12 °C (-306.62 °F, 85.03 °K)
Heat of Fusion
0.51 kJ/mol
Heat of Vaporization
6.62 kJ/mol
First
Ionization Potential
17.42282 eV
Electronegativity
(on
Pauling scale
3.98
Specific Heat
Capacity
0.824 J/g K
Ground State
Electron Configuration
2p
5
Oxidation State(s)
-1
Stable Isotopes
and
Natural Abundance
on Earth
19
F, 100%
Selected
Radioisotopes
18
F
Atomic Radius
42 pm
Crystal Structure
Monoclinic
Discovered by
Moisson, 1886
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