9

F

Fluorine
18.9984032(5)
 Historical Information

Leonardo da Vinci suggested that air consists of at least two different gases. Before then, air was felt to be an element in its own right. He was also aware that one of these gases supported both flames and life.

Basic Information Shells
  • Name:Fluorine
  • Symbol: F
  • Atomic number: 9
  • Atomic weight: 18.9984032(5)
  • Standard state: gas at 298 K
  • Group in periodic table: 17
  • Group name: Halogen
  • Period in periodic table: 2
  • Block in periodic table: p-block
  • Classification: Non-metallic
 fluorine
Uses Trivia
  • A constituent of toothpaste for the same reason. Soluble fluoride in drinking water (2 ppm) may cause mottled enamel in teeth of children acquiring permanent teeth.

Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame. It is not uncommon to see fluorine spelled incorrectly as flourine.