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| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | R | S | T | U | V | X | Z | ||
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| Xenon | Xénon | Ksenon | Xeno | Xenon | ||||||||||||||||||||
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Xe Xenonum |
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- Xenon was discovered by Sir William Ramsay, Morris W. Travers (England) in 1898. The origin of the name comes from the Greek word xenos meaning stranger. It is heavy, colourless, odourless, noble gas. Reacts only with fluorine.
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NOBLE GASES | |
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| Relative atomic mass: | 131.293(6) | Electronic configuration: | [Kr] 4d10 5s2 5p6 |
| Formal oxidation number: | 0 | Electronegativities: | 2.6 |
| Thermal conductivity: | 0.0056 W m-1 K-1 | Electrical resistivity (20 °C): | - μΩcm |
| Atomic radius: | 216 pm | Standard state (20 °C): | gas |
| Density (g dm-3): | 3540 (solid, m.p.) 2939 (liquid, b.p.) 5.8971 (gas, 273 K) |
Molar volume (cm3 mol-1): | 37.09 (solid, m.p.) 44.67 (liquid, b.p.) 22263.99 (gas, 273 K) |
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THERMAL PROPERTIES | |
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| Melting point: | -111.75 °C | Heat of fusion: | 3.1 kJ mol-1 |
| Boiling point: | -108.0 °C | Heat of vaporization: | 12.65 kJ mol-1 |
| Critical temperature: | 16.57 °C | Heat of atomization: | 0 kJ mol-1 |
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IONIZATION ENERGIES AND ABUNDANCE | |
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| 1st ionization energy: | 1170.36 kJ mol-1 | Abundance of element (air): | 0.086 ppm |
| 2nd ionization energy: | 2046.45 kJ mol-1 | Abundance of element (Earth's crust): | 0.000002 ppm |
| 3rd ionization energy: | 3099.42 kJ mol-1 | Abundance of element (oceans): | 0.000047 ppm |
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ISOTOPES | |
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Isotopes | Relative atomic mass | Abundance (%) |
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124Xe | 123.905896(2) | 0.10(1) |
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126Xe | 125.904269(7) | 0.09(1) |
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128Xe | 127.903530(2) | 1.91(3) |
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129Xe | 128.9047794(9) | 26.4(6) |
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130Xe | 129.903508(1) | 4.1(1) |
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131Xe | 130.905082(1) | 21.2(4) |
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132Xe | 131.904154(1) | 26.9(5) |
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134Xe | 133.9053945(9) | 10.4(2) |
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136Xe | 135.907220(8) | 8.9(1) |
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MINERALS AND USES | |
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- Xenon is obtain from the small quantities in liquid air. Used for filling flash lamps and other powerful lamps. Electrical excitation of xenon produces a burst of brilliant white light. Also used in bubble chambers and modern nuclear power reactors. The price of 99.995 % pure xenon gas costs 266.50 €/dm3 in small quantities (1 dm3) and about 10.62 €/dm3 in large quantities (300 dm3).
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REDUCTION POTENTIALS | |
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Balanced half-reaction | Eo / V | Annotation |
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