9
19.00
F
Fluorine
Identification
CAS Number: 7782-41-4
Discovery Year: 1886
Discoverer: Henri Moissan
Discovery Location: France
Properties
Atomic Mass: 18.998403163 →Density: 0.001553 g/cm³ →
Crust Abundance: 585 mg/kg
Crystal Structure: MCL
Atomic Dimensions
Atomic Radius: 50 pm →
Atomic Radius (Rahm): 163 pm
Covalent Radius: 56.99999999999999 pm →Van der Waals Radius: 147 pm
Atomic Volume: 17.1 cm³/mol
Thermodynamics
Electronic Structure
Electron Config: [He] 2s2 2p5
Block: p
Period: 2 →Group: 17 →Electronegativity: 3.98 →Electron Affinity: 3.4011897000000006 eV →Oxidation States: -1
Abundance & Geochemistry
Crust Abundance: 585 mg/kg
Sea Abundance: 1.3 mg/L
Geochemical Class: semi-volatile
Goldschmidt Class: litophile
About
Fluorine is the most reactive element. It is used in toothpaste, Teflon, and various industrial chemicals. In its elemental form, it is a pale yellow gas.
Isotopes
F-19 19 100.00%
