Atomic Number: 9

Name: Fluorine

Atomic symbol: F

Atomic Weight: 18.9984

Electron affinity: -328 kJ/mol

Electron configuration: 1s²2s²2p⁵

Ionization energies: 1,681 kJ/mol; 3,374 kJ/mol; 6,020 kJ/mol; 8,407 kJ/mol; 11,022 kJ/mol; 15,164 kJ/mol; 17,867 kJ/mol

Pauling electronegativity: 4.0

Melting Point: -220^oC

Boiling Point: -188^oC

Density: 1.69 x 10^-3 g/cm³

Standard potential (volts), X₂ + 2e^- ---> X^2-: 2.87

Covalent radius: 0.64 angstroms

Ionic radius: 1.33 angstroms (-1); 0.08 angstroms (+7)

Van Der Wall's radius: 1.35 angstroms

Common oxidation states in compounds: -1, 0