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Chemical element: Krypton (Kr)
| Atomic Number: | 36 |
| Element Symbol: | Kr |
| Element Name: | Krypton |
| Atomic Weight: | 83.798 |
| Group Number: | 18 |
| Group Name: | Noble gas |
| Period Number: | 4 |
| Block: | p-block |
| Ground State Configuration: | [Ar] 3d10 4s2 4p6 |
| Ground State Level: | 1S0 |
| Standard State: | Gas |
| Bond Length: | 404 |
| Atomic Radius Calculated: | 88 |
| Covalent Radius Empirical: | 110 |
| Vander Waals Radius: | 202 |
| First Ionization Energy: | 1350.8 |
| Pauling Electronegativity: | 3.00 |
| Sanderson Electronegativity: | 2.91 |
| Allred Rochow Electronegativity: | 2.94 |
| Mulliken Jaffe Electronegativity: | 3.00 |
| Allen Electronegativity: | 2.966 |
| Molar Volume: | 27.99 |
| Velocity Of Sound: | 1120 |
| Refractive Index: | 1.000427 |
| Melting Point: | -157.36 |
| Boiling Point: | -153.22 |
| Critical Temperature: | -63.7 |
| Thermal Conductivity: | 0.00943 |
| Enthalpy Of Fusion: | 1.64 |
| Enthalpy Of Vaporization: | 9.02 |
| Most Common Oxidation Numbers: | 2 |
| Color: | Colourless |
| Classification: | Non-metallic |
| Discovered By: | Sir William Ramsay, Morris W. Travers |
| Discovered At: | Great Britain |
| Discovered When: | 1898 |
| Origin Of Name: | From the Greek word kryptos meaning hidden |
Calculate the molecular weight of Krypton or molecular weight Kr.
Also see the full list of chemical elements and atomic weights.
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