Fluorine

Halogen

Symbol: F

Atomic Number: 9

Standard State: Gas

Atomic Mass: 18.9984

Electron Configuration: [He]2s2 2p5

Electronegativity: 3.98

Atomic Radius: 135

Ionization Energy: 17.423

Melting Point: 53.53

Boiling Point: 85.03

Density: 0.001696

Year Discovered: 1670