| SYMBOL | Ne |
|
| ATOMIC NUMBER | 10 |
| ATOMIC WEIGHT | 20.180 |
| GROUP NUMBER | 18 |
| STANDARD STATE | GAS |
| COLOUR | COLOURLESS |
| DISCOVERED | IN 1898 BY RAMSEY/TRAVERS IN LONDON |
| ORIGIN OF NAME | FROM THE GREEK NEON MEANING NEW |
| USES |
- ADVERTISING SIGNS.
- CRYOGENIC FREEZING AS IT IS LIGHT, COMPACT AND CHEAP.
- GAS LASERS.
- IN MAKING T.V. TUBES, LIGHTENING ARRESTORS, WAVE METER TUBES AND HIGH VOLTAGE INDICATORS.
|
| VAN DER WAALS RADIUS | 1.60 * 10-10M (OTHER RADII NOT APPLICABLE) |
| COMPOUNDS | NO COMMON ONES |
| EFFECTIVE NUCLEAR CHARGE (Slater) | 5.85 |
| DENSITY | 1444 KgM-3(SOLID AT M.P.), 1207.3 KgM-3 (LIQUID AT B.P.), 0.89994 KgM-3(GAS AT 273K) |
| MELTING POINT | 24.48 K |
| BOILING POINT | 27.10 K |
| ENTHALPY OF FUSION | 0.324 KJMol-1 |
| ENTHALPY OF VAPOURISATION | 1.736 KJMol-1 |
| ISOTOPES | Ne-20, Ne-21, Ne-22, Ne-23 (Radioactive) AND Ne-24 (Radioactive) |
| ELECTRON CONFIGURATION | 1S22S22P6 |
| FIRST IONISATION ENERGY | 2080.6 KJMol-1 |
| ELECTRON AFFINITY | -29 KJMol-1 |
| SOURCES | THE ATMOSTPHERE. |
| GENERAL INFORMATION | NEON IS AN INERT GAS WHICH FORMS UNSTABLE HYDRATES AND GLOWS RED/ORANGE IN A VACUUM TUBE WHEN AT A VOLTAGE. IT IS PRESENT IN THE ATMOSTPHERE TO A SMALL EXTENT. |
NEON