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Neon (Ne)

From Wikipedia, the free encyclopediaNeon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

Neon in the periodic table

Atomic number10
Element categoryNoble Gas

Physical properties

Phase at STPGas
Density0.9002 g/cm3
Atomic weight20.1797 u
Melting point24.56 K
-248.59 °C
-415.462 °F
Boiling point27.104 K
-246.046 °C
-410.8828 °F

Atomic properties

Electronegativity (Pauling Scale)
Electron affinity-116 kJ/mol
Oxidation states0
Ionization energies
12080.7 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

Electron configuration

Elektronkonfiguration (shorthand)[He] 2s2 2p6
Electron configuration1s2 2s2 2p6
Electrons per shell2, 8


Discovered byWilliam Ramsay
Morris Travers
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