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Hydrogen selenide

7:01

H2Se: Hydrogen selenide. Red selenium

1:39

Is H2Se Polar or Nonpolar? (Hydrogen Selenide)

2:52

Hydrogen Selenide H2Se Lewis Dot Structure

6:00

Chemistry short: "Selenium Green" (plus a few other bits)

3:18

Element exploration: Selenium

Hydrogen selenide is an inorganic compound with the formula H2Se. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. H2Se is a colorless, flammable gas under standard conditions. It is the most toxic selenium compound with an exposure limit of 0.05 ppm over an 8-hour period. Even at extremely low concentrations, this compound has a very irritating smell resembling that of decayed horseradish or 'leaking gas', but smells of rotten eggs at higher concentrations.
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