File:SeBlackRed.jpg · Wikimedia Commons · See Wikimedia Commons
AI overview
Selenium is a chemical element (symbol Se, atomic number 34) that can appear in several different forms, such as a brick-red powder or a grey metallic-looking solid, though it rarely occurs in pure form in nature. It was discovered in 1817 and was named after the Greek word for the moon, chosen because of its similarity to the previously discovered element tellurium, which had been named after the Earth.
AI-generated from the Wikipedia summary — may contain errors.
Chemical data
- Formula
- Se
- Molecular weight
- 78.97 g/mol
- IUPAC name
- selenium
- SMILES
- [Se]
- InChIKey
- BUGBHKTXTAQXES-UHFFFAOYSA-N
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Research
50,303 papers- Effects and Impact of Selenium on Human Health, A Review.ReviewMolecules (Basel, Switzerland) · 2024Bai S, Zhang M, Tang S et al.DOI: 10.3390/molecules30010050
- Selenium.ReviewJournal of toxicology. Clinical toxicology · 1999Barceloux DGDOI: 10.1081/clt-100102417
- Selenium-More than Just a Fortuitous Sulfur Substitute in Redox Biology.ReviewMolecules (Basel, Switzerland) · 2023Maia LB, Maiti BK, Moura I et al.DOI: 10.3390/molecules29010120
- Selenium Biofortification: A Dual-Edged Sword of Nutrition and Contamination Risk.ReviewComprehensive reviews in food science and food safety · 2025Xi Z, Chen C, Zhu D et al.DOI: 10.1111/1541-4337.70345
- Selenium and brain aging: A comprehensive review with a focus on hippocampal neurogenesis.ReviewAgeing research reviews · 2025Daneshpour A, Leite MEN, Wagner KH et al.DOI: 10.1016/j.arr.2025.102898
- Research Progress of Selenium-Enriched Foods.ReviewNutrients · 2023Chen Z, Lu Y, Dun X et al.DOI: 10.3390/nu15194189
- Selenium action in neuro-oncology.ReviewBiological trace element research · 2014Yakubov E, Buchfelder M, Eyüpoglu IY et al.DOI: 10.1007/s12011-014-0111-8
- Selenium.ReviewJournal of dairy science · 1970Hogue DEDOI: 10.3168/jds.S0022-0302(70)86356-1
via PubMed
Wikidata facts
- Mass
- 78.971
- Image
- Selen 1.jpg
Show 18 more facts
- element symbol
- Se
- Commons category
- Selenium
- atomic number
- 34
- electronegativity
- 2.55
- oxidation state
- 6
- NIOSH Pocket Guide ID
- 0550
- density
- 4.28
- immediately dangerous to life or health
- 1
- Commons gallery
- Selenium
- melting point
- 392
- boiling point
- 1265
- vapor pressure
- 0
- time-weighted average exposure limit
- 0.2
- canonical SMILES
- [Se]
- chemical formula
- Se
- time of discovery or invention
- 1817-00-00
- Unicode character
- 硒
- ionic radius
- 0.42
via Wikidata · CC0
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