 A krypton-filled discharge tube glowing white |
Krypton |
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Pípè | /ˈkrɪptɒn/ (KRIP-ton) |
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Ìhànsójú | colorless gas with whitish emission |
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Ìwúwo átọ̀mù Ar, std(Kr) | 83.798(2)[1] |
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Krypton ní orí tábìlì àyè |
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Nọ́mbà átọ̀mù (Z) | 36 |
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Ẹgbẹ́ | group 18 (noble gases) |
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Àyè | àyè 4 |
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Àdìpọ̀ | Àdìpọ̀-p |
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Ẹ̀ka ẹ́límẹ́ntì | Ẹ̀fúùfù abíire |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Ar] 3d10 4s2 4p6 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 8 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | gas |
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Ìgbà ìyọ́ | 115.79 K (-157.36 °C, -251.25 °F) |
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Ígbà ìhó | 119.93 K (-153.22 °C, -244.12 °F) |
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Kíki (at STP) | 3.749 g/L |
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Triple point | 115.775 K, 73.2 kPa [2] |
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Critical point | 209.41 K, 5.50 MPa |
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Heat of fusion | 1.64 kJ/mol |
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Heat of | 9.08 kJ/mol |
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Molar heat capacity | 20.786 J/(mol·K) |
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pressure
P (Pa)
|
1
|
10
|
100
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1 k
|
10 k
|
100 k
|
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at T (K)
|
59
|
65
|
74
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120
|
|
|
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Atomic properties |
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Oxidation states | 0, +1, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 3.00 |
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Covalent radius | 116±4 pm |
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Van der Waals radius | 202 pm |
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Spectral lines of krypton |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | (fcc) |
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Speed of sound | (gas, 23 °C) 220, (liquid) 1120 m/s |
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Thermal conductivity | 9.43x10-3 W/(m·K) |
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Magnetic ordering | diamagnetic[3] |
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CAS Number | 7439-90-9 |
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Main isotopes of krypton |
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Àdàkọ:Category-inline | references |