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Compare Neon vs Oxygen

Comparing Neon (Ne) and Oxygen (O). Atomic numbers 10 and 8 with atomic masses 20.18 u and 15.999 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
O
Oxygen
#8

Periodic properties of the elements

NeonOxygen
SymbolNeO
Atomic number108
Group1816
Period22
Blockpp
Element categoryNoble GasNonmetal

Physical properties

NeonOxygen
Phase at STPGasGas
Density0.9002 g/cm31.429 g/cm3
Atomic weight20.1797 u15.999 u
Melting point24.56 K
-248.59 °C
-415.462 °F		54.36 K
-218.79 °C
-361.822 °F
Boiling point27.104 K
-246.046 °C
-410.8828 °F		90.188 K
-182.962 °C
-297.3316 °F

Atomic properties

NeonOxygen
Electronegativity (Pauling Scale)03.44
Electron affinity-116 kJ/mol140.976 kJ/mol
Oxidation states0−2, −1, 0, +1, +2
()
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. 1313.9 kJ/mol
  2. 3388.3 kJ/mol
  3. 5300.5 kJ/mol
  4. 7469.2 kJ/mol
  5. 10989.5 kJ/mol
  6. 13326.5 kJ/mol
  7. 71330 kJ/mol
  8. 84078 kJ/mol

Electron configuration

NeonOxygen
Shorthand configuration[He] 2s2 2p6 [He] 2s2 2p4
Full configuration1s2 2s2 2p6 1s2 2s2 2p4
Electrons per shell2, 82, 6

History

NeonOxygen
PredictionWilliam Ramsay (1897)
DiscoveryWilliam Ramsay, Morris Travers (1898)Carl Wilhelm Scheele, Joseph Priestley (1774)
First isolationWilliam Ramsay, Morris Travers (1898)
Named byAntoine Lavoisier (1777)
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