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selenium
chemical element with symbol Se and atomic number 34
Details
- Instance of
- chemical element, flammable solid, chalcophile element
- Subclass of
- metalloid
- Material
- selenide minerals
- associated hazard
- selenium exposure
- atomic number
- 34
- boiling point
- 1265
- canonical SMILES
- [Se]
- chemical formula
- Se
- density
- 4.28
- described by source
- Armenian Soviet Encyclopedia, Brockhaus and Efron Encyclopedic Dictionary, Small Brockhaus and Efron Encyclopedic Dictionary, Encyclopædia Britannica 11th edition, Collier's New Encyclopedia, 1921
- discoverer or inventor
- Jöns Jacob Berzelius, Johan Gottlieb Gahn
- electronegativity
- 2.55
- element symbol
- Se
- has characteristic
- diamagnetism
- has effect
- selenium exposure
- immediately dangerous to life or health
- 1
- ionic radius
- 0.50, 0.28, 0.42
- location of discovery
- Stockholm
- mass
- 78.971
- medical condition treated
- nutritional deficiency disease
- melting point
- 392
- Mohs' hardness
- 2.0
- named after
- Moon
- NIOSH Pocket Guide ID
- 0550
- oxidation state
- -2, 1, 2, 4, 6
- speed of sound
- 3350.0
- subject has role
- antioxidant, trace metal
- thermal conductivity
- 0.52
- time of discovery or invention
- 1817
- time-weighted average exposure limit
- 0.2
- topic's main category
- Category:Selenium
- Unicode character
- 硒
- vapor pressure
- 0
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