beryllium
Chemical element with symbol Be and atomic number 4
Also known as glucineum · ₄Be · element 4
- Symbol
- Be
- Atomic number
- 4
- Mass
- 9.0122 Da
2
Sources- 1.Stated in Atomic weights of the elements 2013 (IUPAC Technical Report)Retrieved 2020-10-20
- 2.ciaaw.org/atomic-weights.htmRetrieved 2026-09-19
- 9.0122 Da
- Melting point
- 2,349°F
- , 1,278°C
- Boiling point
- 4,532°F
- , 2,970°C
- Density
- 1.85 g/cm³
- Discovered by
- Friedrich Wöhler(1828)
- , Antoine Bussy(1828)
- , Louis Nicolas Vauquelin(1798)
- Discovered
- 1798
Overview
All data
178 statements · 23% with external sources · numbers in brackets are citations
- Immediately dangerous to life or health
- 4 milligram per cubic metre
- Vapor pressure
- 0 millimetre of mercury temperature: 68°F
- Time-weighted average exposure limit
- 0.002 milligram per cubic metre applies to jurisdiction: United States · runtime: 8 h
- Ceiling exposure limit
- 0.0005 milligram per cubic metre applies to jurisdiction: none
- Formula
- Be
1
- Be
- Canonical SMILES
- [Be]
1
- [Be]
- Electrical conductivity
- 25M ampere per volt metre temperature: 20°C
1
Sources- 1.thebalance.com/electrical-conductivity-in-metals-2340117Retrieved 2019-01-30
- 25M ampere per volt metre temperature: 20°C
- Electron configuration
- 1s² 2s²
- [He] 2s²
- Ionic radius
- 0.27 ångström charge number: 2 · coordination number: 4
- 0.45 ångström charge number: 2 · coordination number: 6
- Subject has role
- carcinogen
1
Sources- 1.Stated in California Proposition 65 list of chemicalsoehha.ca.gov/chemicals/berylliumRetrieved 2020-02-19
- occupational carcinogen
- carcinogen
- Bulk modulus
- 120B Pa
- Shear modulus
- 134B Pa
- Poisson's ratio
- 0.093
- Thermal conductivity
- 190 watt per metre kelvin
- Specific heat capacity
- 1,825 joule per kilogram kelvin
- Speed of sound
- 13,000 m/s
- Electrical resistivity
- 3.6e-8 ohm metre
- Ionization energy
- 9.3227 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 18.2112 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 153.8962 eV
1
Sources- 1.“NIST Atomic Spectra Database, Ionization Energies”physics.nist.gov/asdRetrieved 2026-09-18
- 9.3227 eV
- IPA transcription
- bəˈrɪliəm language: English
- Atomic radius
- 105 picometre
- Covalent radius
- 96 picometre
On other databases
92 identifiers linking beryllium across the web's reference databases
- Arab Encyclopedia concept ID1806
- Arabic Ontology lexical concept ID151078434
- Australian Educational Vocabulary IDscot/2378
- BabelNet ID00006870n
- Bibliothèque nationale de France ID12218693d
- BNCF Thesaurus ID30890
- Brockhaus Enzyklopädie online IDberyllium
- CA PROP 65 IDberyllium
- CAB ID18807
- CAMEO Chemicals ID238
- CAS Registry Number7440-41-7
- ChEBI ID33783
- ChemSpider ID4573986
- COD ID9012007
- De Agostini IDberìllio
- Dewey Decimal Classification669.724
- DSSTOX compound identifierDTXCID90875623
- DSSTox substance IDDTXSID4023913
- EC number231-150-7
- ECHA Substance Infocard ID100.028.318
- Enciclopedia Galega Universal ID84575
- Encyclopædia Britannica Online IDscience/beryl
- Encyclopædia Universalis IDberyllium
- Encyclopedia of China (Third Edition) ID (2026)1XsgPs
- Encyclopedia of China (Third Edition) old ID (2021)298922
- EuroVoc ID3835
- Fandom article IDstarwars:Beryllium
- Freebase ID/m/025sq7x
- GitLab.com topic IDberyllium
- Gmelin number16265
- GND ID4144824-8
- Golden ID (archived)Beryllium-KNWM
- Gran Enciclopèdia Catalana IDbe-0
- Gran Enciclopèdia Catalana ID (former scheme)0008470
- Great Norwegian Encyclopedia IDberyllium
- Great Russian Encyclopedia portal IDberillii-79322d
- Haz-Map IDAgents/8
- HCIS ID495
- Hrvatska enciklopedija IDberilij
- HSDB ID512
- ICSC ID0226
- InChIInChI=1S/Be
- InChIKeyATBAMAFKBVZNFJ-UHFFFAOYSA-N
- Interlingual Index IDi113905
- J9U entity ID987007284771305171
- JSTOR topic ID (archived)beryllium
- KBpedia IDBeryllium
- Krugosvet article (archived)nauka_i_tehnika/himiya/BERILLI.html
- Larousse IDdivers/béryllium/26537
- Latvian National Encyclopedia Online ID88301
- Lex IDberyllium
- Library of Congress Authorities IDsh85013403
- MeSH descriptor IDD001608
- MeSH tree codeD01.268.552.075
- Microsoft Academic ID (discontinued)506630978
- Mindat mineral ID52430
- Namuwiki ID베릴륨
- National Library of Spain SpMaBN IDXX543120
- NDL Authority ID00560614
- NE.se IDberyllium
- NicoNicoPedia word article IDベリリウム
- NL CR AUT IDph150532
- OmegaWiki Defined Meaning336
- Open Library subject IDberyls
- OpenAlex IDC506630978
- OSHA Occupational Chemical Database ID531
- Pixiv Encyclopedia IDベリリウム
- PM20 ware ID142103
- PSH ID5750
- PubChem CID5460467
- Quora topic IDBeryllium
- RTECS numberDS1750000
- RxNorm CUI1310252
- ScienceDirect topic IDchemistry/beryllium
- Store medisinske leksikon IDberyllium
- SureChEMBL ID29384895
- Treccani IDberillio
- Treccani Vocabulary IDberillio
- Treccani's Dizionario delle Scienze Fisiche IDberillio
- Treccani's Enciclopedia Italiana IDberillio
- UK Parliament thesaurus ID8639
- UMLS CUIC0005139
- UN Thesaurus ID1000580
- UniChem compound ID1100658
- UNIIOW5102UV6N
- USGS Thesaurus ID1406
- Vikidia article IDen:Beryllium
- WikiKids IDBeryllium
- WordNet 3.1 Synset ID14655473-n
- Yale LUX IDconcept/e826a8c8-c184-4f1b-b776-a9617fbd13a4