#9
Fluorine
diatomic nonmetal· Gas·18.9984031636 u
Fluorine is a chemical element with symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As the most electronegative element, it is extremely reactive:almost all other elements, including some noble gases, form compounds with fluorine.
Read on Wikipedia
Identity
- Symbol
- F
- Atomic Number
- 9
- Atomic Mass
- 18.9984031636 u
- Category
- diatomic nonmetal
- Block
- p-block
- Period
- 2
- Group
- 17
- Appearance
- Chemical element with atomic number 9 (F)
- Year Discovered
- 1810 CE
- Discovered By
- André-Marie Ampère
- Named By
- Humphry Davy, André-Marie Ampère
Electrons
- Configuration
- [He] 2s2 2p5
- Full Configuration
- 1s2 2s2 2p5
- Shells
- 2, 7
- Electronegativity
- 3.98
- Electron Affinity
- 328.1649
- Oxidation States
- -1
- Ionization Energies
- 1681, 3374.2, 6050.4, 8407.7, 11022.7 … +4 more
Physical Properties
- State at
- Gas
- Melting Point
- 53.48
- Boiling Point
- 85.03
- Density
- 1.696
- Crystal Structure
- Simple Cubic
- Magnetic Ordering
- Diamagnetic
Mechanical
- Atomic Radius
- 42 pm
- Covalent Radius
- 64 pm
- Van der Waals
- 147 pm
Thermal & Electrical
- Thermal Conductivity
- 0.0277 W/(m K) W/(m·K)
- Specific Heat
- 824 J/(kg K) J/(g·K)
- Heat of Vaporization
- 3.27 kJ/mol kJ/mol
- Heat of Fusion
- 0.26 kJ/mol kJ/mol
Abundance
- Universe
- 400 ppb
- Sun
- 500 ppb
- Meteorite
- 60 ppm
- Earth's Crust
- 585 ppm
- Ocean
- 1.3 ppm
- Human Body
- 37 ppm