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PERIODIC TABLE
Fluorine
Atomic No. 9
F
Fluorine
About Fluorine
Fluorine is a halogen with atomic number 9 and the highest electronegativity of any element. Its compounds include fluorides used in optical components, protective coatings and specialized chemical processing. Lanthanum fluoride is used in ultraviolet optical coatings, including multilayer mirrors and filters, while calcium fluoride and magnesium fluoride provide optical crystals with useful transmission across ultraviolet and infrared wavelengths.
Properties
- Atomic Number
- 9
- Atomic Symbol
- F
- Atomic Mass
- 18.9984
- CAS No.
- 7782-41-4
- Density
- 1.696 g/l
- Series
- halogen
- Melting Point
- -219.6°C
- Boiling Point
- -188.12°C
- Thermal Conductivity
- 0.000277 W/cm °C
- Heat of Fusion
- 0.26 kJ/mol
- Heat of Vaporization
- 3.27 kJ/mol
- Electronegativity
- 3.98 pauling
- Crystal Structure
- Monoclinic
Fluorine Products
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