Neon (Ne) is the fourth most abundant element in the
universe, but only 0.0018% of the earth's atmosphere is neon.
The largest use for neon gas is in advertising signs. Neon is also
used to make high voltage indicators and is combined with helium to make helium-neon
lasers. Liquid neon is used as a cryogenic refrigerant. Neon is
highly inert and forms no known compounds.
Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris
M. Travers, an English chemist, shortly after their discovery of the element
krypton in 1898. Like krypton, neon was discovered
through the study of liquefied air.
|
 |
| Atomic Number |
10 |
| Atomic Weight |
20.1797 |
| Melting Point |
24.56 K |
| Boiling Point |
27.07 K |
| Heat of Vaporization |
86.6 kj/kg K |
| Specific Heat |
1.84 kj/kg K |
| Viscosity |
124.0 kg/m-s X 106 |
| Thermal Conductivity |
113 mW/m-k |
| Dielectric Constant |
1.188 |
| Critical Temperature |
44.4 K |
| Critical Pressure |
2.71 MPa |
| Temperature at Triple Point |
24.568 K |
| Pressure at Triple Point |
43.0 Mpa X 103 |
| Density |
.0008999 g/cc |
| Phase at Room Temperature |
Gas |
|
