Periodic Table of Elements




Neon was discovered by Sir William Ramsay, Morris W. Travers at 1898 in London, England.

Name: Neon
Symbol: Ne
Atomic number: 10
Atomic weight: 20.180
State: gas
Group, period, block: 18, 2, p
Color: colorless gas
Classification: noble gases
Electron configuration: 1s2 2s2 2p6

Physical properties

Density: 1444 kg m-3
Melting point: 24.56 [or -248.59 C (-415.46 F)] K
Boiling point: 27.07 [or -246.08 C (-410.94 F)] K

Atomic properties

Oxidation states: 1, 0
Electronegativity: no data (Pauling scale)
Ionization energies: 1st: 2080.7 kJmol-1
Covalent radius: 58 pm
Van der Waals radius: 154 pm
  • Ne
  • Electron Configuration


There are three naturally occurring isotopes of neon exist, 20Ne, 21Ne and 22Ne.