Input interpretation
fluorine (chemical element)
Periodic table location
Periodic table location
Image
Image
Basic elemental properties
![atomic symbol | F atomic number | 9 short electronic configuration | [He]2s^22p^5 Aufbau diagram | 2p 2s block | p group | 17 period | 2 atomic mass | 18.998403163 u (unified atomic mass units)](../image_source/a889064def411a6e12fee18303dd2b36.png)
atomic symbol | F atomic number | 9 short electronic configuration | [He]2s^22p^5 Aufbau diagram | 2p 2s block | p group | 17 period | 2 atomic mass | 18.998403163 u (unified atomic mass units)
Thermodynamic properties
phase at STP | gas melting point | -219.6 °C (rank: 99th) boiling point | -188.12 °C (rank: 90th) critical temperature | 144.13 K (rank: 17th) critical pressure | 5.172 MPa (rank: 15th) molar heat of fusion | 0.26 kJ/mol (rank: 91st) molar heat of vaporization | 3.27 kJ/mol (rank: 90th) specific heat at STP | 824 J/(kg K) (rank: 13th) adiabatic index | 7/5 (rank: 1st) (properties at standard conditions)
Material properties
density | 0.001696 g/cm^3 (rank: 91st) molar volume | 11200 cm^3/mol refractive index | 1.000195 thermal conductivity | 0.0277 W/(m K) (rank: 87th) (properties at standard conditions)
Electromagnetic properties
color | (colorless) refractive index | 1.000195
Reactivity
valence | 1 electronegativity | 3.98 electron affinity | 328 kJ/mol (kilojoules per mole) first ionization energy | 1681 kJ/mol (kilojoules per mole) ionization energies | 1681 kJ/mol | 3374.2 kJ/mol | 6050.4 kJ/mol | 8407.7 kJ/mol | 11022.7 kJ/mol | 15164.1 kJ/mol | 17868 kJ/mol | 92038.1 kJ/mol | 106434.3 kJ/mol
Reactivity
Atomic properties
term symbol | ^2P_(3/2) atomic radius | 50 pm covalent radius | 57 pm van der Waals radius | 147 pm (electronic ground state properties)
(neutral fluorine atomic spectrum)
Abundances
universe abundance | 4×10^-5 mass% (rank: 24th) solar abundance | 5×10^-5 mass% (rank: 25th) meteorite abundance | 0.0087 mass% (rank: 22nd) crust abundance | 0.054 mass% (rank: 14th) ocean abundance | 1.3×10^-4 mass% (rank: 13th) human abundance | 0.0037 mass% (rank: 14th) universe molar abundance | 3×10^-6 mol% (rank: 23rd) solar molar abundance | 3×10^-6 mol% (rank: 24th) meteorite molar abundance | 0.0097 mol% (rank: 20th) ocean molar abundance | 4.2×10^-5 mol% (rank: 13th) crust molar abundance | 0.059 mol% (rank: 13th) human molar abundance | 0.0012 mol% (rank: 13th)
Nuclear properties
half-life | (stable) stable isotopes | F-19 (100%) nuclear spin | F-14: 2^- | F-15: 1/2^+ | F-16: 0^- | F-17: 5/2^+ | F-18: 1^+ | F-19: 1/2^+ | F-20: 2^+ | F-21: 5/2^+ | F-22: 4^+ | F-23: 5/2^+ | F-25: 5/2^+ | F-26: 1^+ | F-27: 5/2^+ | F-29: 5/2^+ | F-31: 5/2^+ unstable isotopes | F-18 (109.771 min) | F-17 (64.49 s) | F-20 (11.07 s) | F-22 (4.23 s) | F-21 (4.158 s) | F-23 (2.23 s) | F-24 (390 ms) | F-25 (50 ms) | F-26 (9.6 ms) | F-27 (5 ms) | F-29 (2.5 ms) | F-30 (260 ns) | F-31 (250 ns) | F-28 (40 ns) | F-16 (11 zs) | F-15 (0.46 zs) neutron cross-section | 0.0096 b neutron mass absorption | 2×10^-5 m^2/kg
Identifiers
CAS number | 7782-41-4 PubChem CID number | 24524 Gmelin number | 16281