Element overview
Fluorine (F) is element 9 with a listed atomic mass of 18.998403163 u. It is in group 17 and period 2. Its category is halogen.
Atomic properties
Electron configuration: [He] 2s2 2p5. Electronegativity: 3.98. Common oxidation states: -1.
Physical properties
Density: 0.001696; melting point: 53.48; boiling point: 85.03. Values depend on conditions, phase and source.