| Krypton |
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36Kr |
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| Panagway |
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colorless gas, exhibiting a whitish glow in a high electric field
Spectral lines of krypton |
| Kinatibuk-ang mga kinaiya |
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| Ngalan,simbolo,kaiphan | krypton, Kr, 36 |
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| Paglitok | /ˈkrɪptɒn/[[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ton]] |
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| Kategoriyang elemento | gas nga halangdon |
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| Group,period,block | 18, 4,p |
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| Gibug-aton sa atomo | 83.798 |
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| Kontorno sa elektron | [Ar] 3d10 4s2 4p6
2, 8, 18, 8 Electron shells of krypton (2, 8, 18, 8) |
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| History |
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| Pagkadiskobre | William Ramsay andMorris Travers (1898) |
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| First isolation | William Ramsay and Morris Travers (1898) |
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| Physical properties |
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| Phase | gas |
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| Density | (0 °C, 101.325kPa)
3.749 g/L |
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| Liquiddensity atb.p. | 2.413[1] g·cm−3 |
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| Melting point | 115.79 K, -157.36 °C, -251.25 °F |
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| Boiling point | 119.93 K, -153.22 °C, -244.12 °F |
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| Triple point | 115.775 K (-157°C), 73.2 kPa |
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| Critical point | 209.41 K, 5.50 MPa |
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| Heat of fusion | 1.64kJ·mol−1 |
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| Heat of vaporization | 9.08 kJ·mol−1 |
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| Molar heat capacity | 5R/2 = 20.786 J·mol−1·K−1 |
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| Vapor pressure |
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| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k | | at T (K) | 59 | 65 | 74 | 84 | 99 | 120 |
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| Atomic properties |
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| Oxidation states | 2, 1,0 |
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| Electronegativity | 3.00 (Pauling scale) |
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| Ionization energies | 1st: 1350.8 kJ·mol−1 |
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| 2nd: 2350.4 kJ·mol−1 |
| 3rd: 3565 kJ·mol−1 |
| Covalent radius | 116±4 pm |
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| Van der Waals radius | 202 pm |
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| Miscellanea |
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| Crystal structure | cubic face-centered |
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| Magnetic ordering | diamagnetic[2] |
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| Thermal conductivity | 9.43×10-3 W·m−1·K−1 |
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| Speed of sound | (gas, 23 °C) 220, (liquid) 1120m·s−1 |
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| CAS registry number | 7439-90-9 |
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| Most stable isotopes |
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| Main article:Isotopes of krypton |
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| ·r |
