English
French
Croatian
German
Italian
|
||||||||||||||||||||||||
 |
|
|
||||||||||||||||||||||
|
||||||||||||||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | R | S | T | U | V | X | Z | ||
|
||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||||||||||
| Neon | Néon | Neon | Neo | Neon | ||||||||||||||||||||
|
||||||||||||||||||||||||
|
Ne Neon |
|
||||||||||||||||||||||||||||||
- Neon was discovered by Sir William Ramsay and Morris W. Travers (England) in 1898. The origin of the name comes from the Greek word neon meaning new. It is colourless, odourless inert gas. Non-reactive even with fluorine. Fourth most abundant element in the universe.
|
|
|
|
NOBLE GASES | |
|
||
| Relative atomic mass: | 20.1797(6) | Electronic configuration: | [He] 2s2 2p6 |
| Formal oxidation number: | 0 | Electronegativities: | - |
| Thermal conductivity: | 0.0491 W m-1 K-1 | Electrical resistivity (20 °C): | - μΩcm |
| Atomic radius: | 154 pm | Standard state (20 °C): | gas |
| Density (g dm-3): | 1444 (solid, m.p.) 1207.3 (liquid, b.p.) 0.89994 (gas, 273 K) |
Molar volume (cm3 mol-1): | 13.97 (solid, m.p.) 16.71 (liquid, b.p.) 22423.38 (gas, 273 K) |
|
|
|
|
THERMAL PROPERTIES | |
|
||
| Melting point: | -248.59 °C | Heat of fusion: | 0.324 kJ mol-1 |
| Boiling point: | -246.08 °C | Heat of vaporization: | 1.736 kJ mol-1 |
| Critical temperature: | -228.76 °C | Heat of atomization: | 0 kJ mol-1 |
|
|
|
|
IONIZATION ENERGIES AND ABUNDANCE | |
|
||
| 1st ionization energy: | 2080.68 kJ mol-1 | Abundance of element (air): | 18 ppm |
| 2nd ionization energy: | 3952.38 kJ mol-1 | Abundance of element (Earth's crust): | 0.00007 ppm |
| 3rd ionization energy: | 6122.04 kJ mol-1 | Abundance of element (oceans): | 0.04 ppm |
|
|
|
|
ISOTOPES | |
|
||
|
Isotopes | Relative atomic mass | Abundance (%) |
|
|
||
|
20Ne | 19.992440176(2) | 90.48(3) |
|
21Ne | 20.99384674(4) | 0.27(1) |
|
22Ne | 21.9913855(2) | 9.25(3) |
|
|
|
|
MINERALS AND USES | |
|
||
- Neon is obtained by liquefaction of air and separated from the other gases by fractional distillation. Primarily for lighting. The price of 99.999 % pure neon gas costs 165.30 €/dm3 in small quantities (1 dm3) and about 2.81 €/dm3 in large quantities (300 dm3).
|
|
|
|
REDUCTION POTENTIALS | |
|
||
|
Balanced half-reaction | Eo / V | Annotation |
|
|
||
