Category
page 1Fluorine
fluorine
Fluorine is a chemical element; it has symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as pale yellow diatomic gas. Fluorine is extremely reactive as it reacts with all other elements except for the light noble gases. In its elemental form it is highly toxic.

Henri Moissan
French chemist (1852–1907)
CNO cycle
set of fusion reactions by which stars convert hydrogen to helium: 4¹H+2e⁻→⁴He+2e⁺+2e⁻+2νₑ+3γ+24.7 MeV→⁴He+2νₑ+3γ+26.7 MeV
water fluoridation
addition of fluoride to a water supply to reduce tooth decay
dental fluorosis
human disease
isotope of fluorine
fluoride therapy
therapeutic use of fluorine

Hydrofluoric acid burn
medical condition

skeletal fluorosis
bone disease caused by excessive accumulation of fluoride in the bones
carbon–fluorine bond
covalent bond between carbon and fluorine atoms
Fluorine-19 NMR
analytical technique
krypton fluoride laser
type of excimer laser
Argon fluoride laser
used in the production of semiconductor integrated circuits, eye surgery, micromachining, and scientific research
1930 Meuse Valley fog
1930 natural disaster