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Compare Neon vs Fluorine

Comparing Neon (Ne) and Fluorine (F). Atomic numbers 10 and 9 with atomic masses 20.18 u and 18.998 u, classified as noble gas and nonmetal. Below: a side-by-side comparison of their physical, atomic, electron-configuration and historical properties, including density, melting and boiling points, ionization energies, oxidation states and discovery history.

vs
Ne
Neon
#10
F
Fluorine
#9

Periodic properties of the elements

NeonFluorine
SymbolNeF
Atomic number109
Group1817
Period22
Blockpp
Element categoryNoble GasNonmetal

Physical properties

NeonFluorine
Phase at STPGasGas
Density0.9002 g/cm31.696 g/cm3
Atomic weight20.1797 u18.9984 u
Melting point24.56 K
-248.59 °C
-415.462 °F		53.48 K
-219.67 °C
-363.406 °F
Boiling point27.104 K
-246.046 °C
-410.8828 °F		85.03 K
-188.12 °C
-306.616 °F

Atomic properties

NeonFluorine
Electronegativity (Pauling Scale)03.98
Electron affinity-116 kJ/mol328.165 kJ/mol
Oxidation states0−1, 0
(oxidizes oxygen)
Ionization energies
  1. 2080.7 kJ/mol
  2. 3952.3 kJ/mol
  3. 6122 kJ/mol
  4. 9371 kJ/mol
  5. 12177 kJ/mol
  6. 15238 kJ/mol
  7. 19999 kJ/mol
  8. 23069.5 kJ/mol
  9. 115379.5 kJ/mol
  10. 131432 kJ/mol
  1. 1681 kJ/mol
  2. 3374.2 kJ/mol
  3. 6050.4 kJ/mol
  4. 8407.7 kJ/mol
  5. 11022.7 kJ/mol
  6. 15164.1 kJ/mol
  7. 17868 kJ/mol
  8. 92038.1 kJ/mol
  9. 106434.3 kJ/mol

Electron configuration

NeonFluorine
Shorthand configuration[He] 2s2 2p6 [He] 2s2 2p5
Full configuration1s2 2s2 2p6 1s2 2s2 2p5
Electrons per shell2, 82, 7

History

NeonFluorine
PredictionWilliam Ramsay (1897)
DiscoveryWilliam Ramsay, Morris Travers (1898)André-Marie Ampère (1810)
First isolationWilliam Ramsay, Morris Travers (1898)Henri Moissan (1886)
Named byHumphry Davy, André-Marie Ampère
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