Fluorine (F) properties

Atomic mass, symbol and atomic number

fluorine is a naturally occurring element with the element symbol F and atomic number 9. In the periodic table it stands with an atomic mass of 18,998 u in the 7th main group. The chemical element discovered by Henri Moissan in 1886 is not radioactive and is in a gaseous state at room temperature.

Profile: Fluorine

Chemical element:fluorine
Atomic number:9
Group:halogen group
explorers:Henri Moissan
Year of discovery:1886
Atomic properties
Atomic mass:18,998 u
Atomic radius:50 pm
Covalent radius:71 pm
Van der Waals radius:147 pm
Electron configuration:He 2s2 2p5
ionization:1681.0 kJ / mol
Physical Properties
Physical state:gaseous
Crystal structure:/
molar volume:11,20 · 10-6 m3/ mol
Mohs hardness:/
Melting point:-219 ° C
Boiling point:-188 ° C
Heat of fusion:0.25 kJ / mol
Heat of vaporization:6.32 kJ / mol
Thermal conductivity:0.027 W
Chemical properties

Did you know that ...

  • Elementary fluorine (F) hardly occurs in nature, because it immediately connects with other elements?
  • Is most fluoride in the human body in enamel and bone?
  • Fluorine is toxic even in very small quantities?
  • Fluorine has the highest electronegativity on the Pauling scale?
  • Henri Moissan received the Nobel Prize for the production of elemental fluorine in 1906?