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 |
|
|
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. | |