Symbol F
Atomic Number 9
Atomic Mass B18.998403 g.mol-1
Discovered by Henri Moissan

Chemical Properties of Fluorine

Group 17 Melting point −219.67°C, −363.41°F, 53.48 K
Period 2 Boiling point −188.11°C, −306.6°F, 85.04 K
Block p Density (g cm−3) 0.001553
Atomic number 9 Relative atomic mass 18.998  
State at 20°C Gas Key isotopes 19F
Electron configuration [He] 2s22p5 CAS number 7782-41-4
ChemSpider ID 4514530 ChemSpider is a free chemical structure database

What is Fluorine?

  • The element Fluorine is a poisonous gas.
  • It usually exists as fluoride ion F- in aqueous solution
  • It remains in the air for long when attached to tiny particles.

Uses of Fluorine

  • Molecular fluorine and Atomic fluorine are used in semiconductor manufacturing for plasma etching, MEMs fabrication, and flat panel display production.
  • Chlorofluorocarbons are used extensively used in air conditioners and refrigerators.
  • Fluorides are also added to toothpaste to prevent dental cavities.
  • The metal could be used to map the circulatory system and any disorders.
  • Proposedly could be used in the optoelectric nuclear batteries.

Properties of Fluorine

  • Fluorine exists naturally in the earth’s crust and found in coal, clay, and rocks.
  • Hydrogen fluorides are released into the air by the industries through the processes of combustion.
  • 0.6 ppb of fluorine is present as organic chloride compounds and salt spray in the atmosphere.
  • The element has been recorded around 50 ppb in city environments.

Certain Facts About Fluorine

  • The 13th most abundant element in the Earth’s crust is Fluoride.
  • Fluorine is reactive with other elements which can combine with nearly any element on Earth.
  • Even water burn in fluorine with a bright flame along with finely divided metals like glass, ceramics, and carbon.

Practise This Question

Which of the following halides will be most reactive in SN2 reaction and SN1 reaction, respectively?