krypton
Chemical element with symbol Kr and atomic number 36; rare gas
Also known as 36Kr · element 36 · Kr
- Symbol
- Kr
- Atomic number
- 36
1
- 36
- Mass
- 83.798 Da
1
Sources- 1.Stated in Atomic weights of the elements 2013 (IUPAC Technical Report)Retrieved 2020-10-19
- 83.798 Da
- Melting point
- 115.79 K
- Boiling point
- 121.2 K
- Discovered by
- Discovered
- 1898
Overview
All data
137 statements · 34% with external sources · numbers in brackets are citations
- Formula
- Kr
1
- Kr
- Canonical SMILES
- [Kr]
1
- [Kr]
- Has characteristic
- colorlessness applies to part: simple substance
- tastelessness applies to part: simple substance
- odorlessness applies to part: simple substance
- diamagnetism
- Standard molar entropy
- 164 joule per mole kelvin state of matter: gas
- Electron configuration
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶
- [Ar] 3d¹⁰ 4s² 4p⁶
- Thermal conductivity
- 0.00949 watt per metre kelvin
- Speed of sound
- 1,120 m/s
- Ionization energy
- 13.9996 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 24.3598 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 35.838 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 13.9996 eV
- IPA transcription
- ˈkrɪptɒn language: English
- Oxidation state
- 0
- 1
- 2
- Covalent radius
- 116 picometre
- Van der Waals radius
- 202 picometre
On other databases
72 identifiers linking krypton across the web's reference databases
- Arabic Ontology lexical concept ID151078485
- Australian Educational Vocabulary IDscot/3534
- BabelNet ID00006866n
- Bibliothèque nationale de France ID119666366
- BNCF Thesaurus ID31853
- Brockhaus Enzyklopädie online IDkrypton-20
- CAMEO Chemicals ID3724
- CAS Registry Number7439-90-9
- ChEBI ID49696
- ChEMBL IDCHEMBL1233877
- ChemSpider ID5223
- COD ID9012404
- Dewey Decimal Classification546.754
- DSSTOX compound identifierDTXCID3047637
- DSSTox substance IDDTXSID5064675
- EC number231-098-5
- ECHA Substance Infocard ID100.028.271
- Encyclopædia Britannica Online IDscience/krypton-chemical-element
- Encyclopædia Universalis IDkrypton
- Encyclopedia of China (Third Edition) ID (2026)3mN8GV
- Encyclopedia of China (Third Edition) old ID (2021)298840
- FAST ID989199
- Freebase ID/m/0286yf3
- GND ID4165832-2
- Great Norwegian Encyclopedia IDkrypton
- Great Russian Encyclopedia portal IDkripton-78ec21
- Hrvatska enciklopedija IDkripton
- ICSC ID0604
- InChIInChI=1S/Kr
- InChIKeyDNNSSWSSYDEUBZ-UHFFFAOYSA-N
- Interlingual Index IDi113956
- J9U entity ID987007548341105171
- JSTOR topic ID (archived)krypton
- KBpedia IDKrypton
- Lex IDkrypton
- Library of Congress Authorities IDsh85073327
- MeSH descriptor IDD007726
- MeSH tree codeD01.268.613.425
- Microsoft Academic ID (discontinued)521692839
- Museum-digital tag ID59198
- NALT ID48590
- National Library of Poland MMS ID9810681848405606
- National Library of Spain SpMaBN IDXX534609
- NDL Authority ID00567028
- NE.se IDkrypton
- NicoNicoPedia word article IDクリプトン
- OmegaWiki Defined Meaning159828
- OpenAlex IDC521692839
- PDB ligand IDKR
- PDB structure ID1C6Q
- Probes And Drugs IDPD051789
- ProofWiki IDDefinition:Krypton
- PSH ID5820
- PubChem CID5416
- Quora topic IDKrypton-4
- Römpp online IDRD-11-02277
- ScienceDirect topic IDchemistry/krypton
- Semantic Scholar topic ID56681
- SureChEMBL ID29242044
- Treccani IDcripto
- UK Archival Thesaurus IDf2/mt225/4347/13304
- UMLS CUIC0022792
- UniChem compound ID657680
- UNII5I8I620HVX
- UNSPSC code12142003
- USGS Thesaurus ID1487
- Vikidia article IDfr:Krypton
- WikiKids IDKrypton_(element)
- WordNet 3.1 Synset ID14667094-n
- Yale LUX IDconcept/ed4f9c3a-291c-45ce-9a2d-99cfae598032
- YSO ID17370
- ZVG number7360