9
F
Fluorine
Fluorine
Fluorine (F)
Halogens · Gas · Period 2 · Group 17
Element Properties
- Atomic Number
- 9
- Symbol
- F
- Atomic Mass
- 18.9984
- Category
- Halogens
- Standard State
- Gas
- Period
- 2
- Group
- 17
- Electronegativity
- 3.98
- Atomic Radius
- 135
- Ionization Energy
- 17.42
- Electron Affinity
- 3.34
- Oxidation States
- -1
- Melting Point
- 53.53 K (-219.62 °C)
- Boiling Point
- 85.03 K (-188.12 °C)
- Density
- 0.001696
- Electron Configuration
- [He]2s2 2p5
- Year Discovered
- 1670
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Frequently asked questions
What is the atomic number of Fluorine?
The atomic number of Fluorine is 9, which equals the number of protons in its nucleus.
What is the atomic mass of Fluorine?
The atomic mass of Fluorine is approximately 18.9984 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Fluorine?
The electron configuration of Fluorine is [He]2s2 2p5.
Where is Fluorine in the periodic table?
Fluorine is located in period 2, group 17.
When was Fluorine discovered?
Fluorine was discovered in 1670.
Related elements
Same group
17
Cl
Chlorine
35.45
35
Br
Bromine
79.9
53
I
Iodine
126.904
85
At
Astatine
209.987
117
Ts
Tennessine
294.211