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Atomic: M.A.C. | Reference
Diagrams: Shell | Atomic Radius | Electron || Images
Fluorine
Electrons per shell 2,7
Electron Configuration 1s2 2s2 2p5 open electron config
Ground state 23/2
Atomic Volume 17.1 cm3 mol-1
Electronegativity 3.98
Magnetic ordering Non-magnetic
Thermal Properties
Enthalpy of Atomization 79.08 kJ mol-1 @25°C
Enthalpy of Fusion 1.02 kJ mol-1
Enthalpy of Vaporisation 3.26 kJ mol-1
Heat Capacity 31.304 J mol-1 K-1
Thermal Conductivity 27.7 W m-1 K-1
Thermal Expansion No data.
Electrical Properties
Electrical resistivity No data.
Electrical conductivity ? 106/cm Ω
Chemical Properties
Electrochemical Equivalent 0.70883 g Ah-1
Valence Electron Potential (-eV) -10.1
Ionization Potential  
First 17.422
Second 34.97
Third 62.707
Incompatibilities Water, nitric acid (HNO3), oxidizers, organic compounds.
Flammability
Non-flammable gas (extreme oxidizer)
Optical Properties
Refractive Index (gas) 1.000195
Energy Levels
Kα1 (intensity 100) 0.6768 KeV
Atomic Radii
Empirical 50 pm
Bohr Radius 42 pm
Covalent Radius 71 pm
Van der Waals 147 pm
Triple covalent 53 pm
Metallic No data.
Oxidation States
Main F-1
Other
Ionisation Energies (kJ mol-1) show graph
M - M+ 1681
M+ - M2+ 3374
M2+ - M3+ 6050
M3+ - M4+ 8408
M4+ - M5+ 11023
M5+ - M6+ 15164
M6+ - M7+ 17867
M7+ - M8+ 92036
M8+ - M9+ 106432
Covalent Bonds (kJ mol-1)
F-F 159
F-O 190
F-N 272
C-F 484
Vapour Pressure
P (Pa) 1 10 100 1K 10K 100K
T (K) 38 44 50 58 69 85
Crystal Structure
Structure Monoclinic
a = 550 pm
b = 328 pm
c = 728 pm
α = 90°
β = 90°
γ = 90°