What is SeH2? Important knowledge about SeH2.

Definition of SeH₂
SeH₂, also known as Hydrogen selenide or Selane in English, is a chemical compound with a molar mass of 81.97 atomic mass units. It consists of one Selenium (Se) atom and two Hydrogen (H) atoms, thus its molecular structure is SeH₂. There is no clear information about the ionic structure of SeH₂.

Properties of SeH₂
2.1 Physical properties of SeH₂
SeH₂ is a gas at standard conditions, colorless and has a pungent smell. Its pH can vary depending on the concentration and the reaction environment.
2.2 Chemical properties of SeH₂
SeH₂ is quite irritating and toxic, it can react strongly with strong oxidizers and halogen-containing compounds.

Common chemical equations of SeH₂
Information about the reactions of SeH₂ with metals, acids, non-metals, and salts is not yet fully available. Students need to refer to textbooks or other reliable sources to better understand these reactions.

Synthesis of SeH₂
4.1 Laboratory synthesis of SeH₂
SeH₂ is usually synthesized in the laboratory through the reaction between Selenium and dilute sulfuric acid at low temperatures. Information about other synthesis methods is not yet available.
4.2 Industrial synthesis of SeH₂
Information about the industrial synthesis of SeH₂ has not been widely published.