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9 - Fluorine diatomic nonmetal

Discovered by André-Marie Ampère in 1886

Fluorine

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.

Shell Electrons Orbitals
1 2 2 in 1s
2 7 2 in 2s + 5 in 2p
FluorineF Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7
19  u Atomic Mass
0.57  Å Atomic Radius
85.03  K Boiling Point
0.57  Å Covalent Radius
1.70e-3  g/cm³ Density
328.16 Electron Affinity
3.98 Electronegativity
17.42  eV First Ionization Energy
53.63  K Melting Point
2 Number of Shells
7 Electron Valency
9 Atomic Number
2, 7 Electron Shell Occupations
0.82  J/(g K) Specific Heat