10 Ne 20.18
Neon
Noble Gas
Neon (Ne) is a chemical element with atomic number 10, classified as a noble gas. At room temperature it is a gas. It was discovered in 1898 by William Ramsay, Morris Travers.
Properties
- Atomic number
- 10
- Atomic mass
- 20.18 u
- Category
- Noble Gas
- Group
- 18
- Period
- 2
- Block
- p-block
- Electron configuration
- [He] 2s² 2p⁶
- Phase at STP
- Gas
- Density
- 0.9002 g/L
- Melting point
- 24.56 K (-248.6 °C)
- Boiling point
- 27.07 K (-246.1 °C)
- Electronegativity
- —
- Atomic radius
- 38 pm
- Ionization energy
- 21.565 eV
- Discovery
- 1898 · William Ramsay, Morris Travers
Common uses
Neon signs, high-voltage indicators, lasers
Did you know?
Creates the iconic orange-red glow in neon signs and is chemically inert.
Experiment with the elements
Neon doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.