What is Al2Se11? Important knowledge about Al2Se11.

Sorry, but the compound Al₂Se₁₁ does not exist in chemistry. This could be a typing or writing error. The known compounds of aluminum and selenium are identified as Al₂Se₃.

If you need information about compound Al₂Se₃, I can help you with that.

Al₂Se₃ is also known as Aluminum selenide. In the aluminum atom, the atomic mass is 26.982 and selenium has an atomic mass of 78.971, so the molecular mass of Al₂Se₃ is 293.846.

Properties: Al₂Se₃ is a colorless solid. It is odorless and has a neutral pH.

Common chemical equations of Al₂Se₃:

• Reaction with water: Al₂Se₃ + 6H₂O -> 2Al(OH)₃ + 3H₂Se
• Reaction with acid: Al₂Se₃ + 6HCl -> 2AlCl₃ + 3H₂Se
• Reaction with metal: 2 Al + 3Se -> Al₂Se₃

Synthesis of Al₂Se₃: Al₂Se₃ can be synthesized through the reaction between aluminum and selenium at high temperatures.

Please note, these chemical reactions should be conducted under the supervision of a professional chemistry instructor as they may produce harmful compounds.