What is Al2Se2? Important knowledge about Al2Se2.

1. Definition of Al₂Se₂:
   Al₂Se₂ (Dialuminium selenide) is a chemical compound with a total of 4 atoms, including 2 aluminium (Al) atoms and 2 selenium (Se) atoms. The molecular weight of Al₂Se₂ is 290.66 g/mol. The proposed structure of Al₂Se₂ is Al(+2)[Se(-2)]2. The ionic structure of Al₂Se₂ consists of two Al₃+ ions and two Se₂- ions.

2. Properties of Al₂Se₂:
   2.1 Physical properties of Al₂Se₂: Al₂Se₂ is a solid, black substance. The smell of Al₂Se₂ is not clearly defined and its pH is also not available.
   2.2 Chemical properties of Al₂Se₂: Al₂Se₂ is very reactive with air and water, producing strong oxidizing agents.

3. Common chemical equations involving Al₂Se₂:
   There is currently no specific data on the reactions of metals, acids, nonmetals, salts with Al₂Se₂.

4. Synthesis of Al₂Se₂:
   4.1 Laboratory synthesis of Al₂Se₂: Currently, there is no specific data on the synthesis of Al₂Se₂ under laboratory conditions.
   4.2 Industrial synthesis of Al₂Se₂: There is also currently no information on the synthesis of Al₂Se₂ under industrial conditions.

Note, as Al₂Se₂ is a very strong chemical compound, its use and handling must strictly adhere to safety regulations.