Krypton
Chemical, physical and material properties and data of the chemical element Krypton.
General Information about Krypton
Regular nameKryptonChemical symbolKrOther namesSystematic nameHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership
Atomar Properties of Krypton
Atomic number Z36 = number of protonsStandard Atomic Weight83.798 (2)
Electron configuration of Krypton
| 1s | 2s | 2p | 3s | 3p | 3d | 4s | 4p | 4d | 4f | 5s | 5p | 5d | 5f | 6s | 6p | 6d | 6f | 7s | 7p |
|---|
| 2 | 2 | 6 | 2 | 6 | 10 | 2 | 6 | | | | | | | | | | | | |
Abbreviated form: [Ar] 3d10 4s2 4p6 .
Ionization Energies of Krypton
The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volts (eV) per atom to separate a given electron from an Krypton atom.
| IE1 | IE2 | IE3 | IE4 | IE5 | IE6 | IE7 | IE8 |
|---|
| 13.999605 | 24.35984 | 36.950 | 52.49 | 64.69 | 78.49 | 111.0 | 125.802 |
Isotopic Data of Krypton
An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Krypton isotopes.
Chemistry of Krypton
Oxidation states0Electronegativity3.0 (Pauling original)
3.00 (Pauling)
2.966 (Allen)
3.17 (Sanderson)
6.3916 eV (Gosh Gupta)Electron affinity-1.0(2) eV
-96(20) kJ mol-1
Material and Physical Properties
Melting point- 157.37 °CEnthalpy of fusion (molar)1.64 kJ mol-1Boiling point- 153.415 °CEnthalpy of vaporization9.08 kJ mol-1Density3.749 g L -1 (0°C; 101.325 kPa)
External Data, Identifiers
CAS registry number7439-90-9InChI =1S/KrInChIKeyDNNSSWSSYDEUBZ-UHFFFAOYSA-NPubChem ID5416
Last update: 2022-12-12
Perma link: https://www.chemlin.org/chemical-elements/krypton.php
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