Fluorine Sodium

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

Symbol

Atomic number

Group

Period

Block

Element category

Noble Gas

Physical properties

Phase at STP

Gas

Density

0.9002 g/cm³

Atomic weight

20.1797 u

Melting point

24.56 K
-248.59 °C
-415.462 °F

Boiling point

27.104 K
-246.046 °C
-410.8828 °F

Atomic properties

Electronegativity (Pauling Scale)

Electron affinity

-116 kJ/mol

Oxidation states

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

Electron configuration

Elektronkonfiguration (shorthand)

[He] 2s² 2p⁶

Electron configuration

1s² 2s² 2p⁶

Electrons per shell

2, 8

History

Discovered

1898

Discovered by

William Ramsay
Morris Travers