Aluminate

An aluminate is a compound containing (aluminum) and (oxygen) . When precipitated from solution, the anion condenses with more electropositive elements. The generally accepted form of the aluminate is a mononuclear tetrahedral complex that is negatively charged, Al(OH)₄− or AlO₂−. Examples of aluminate compounds include sodium aluminate (Na₂Al₂O₄) and potassium aluminate (K₂Al₂O₄), both being alkali-ion precipitates of the tetrahedral monomer obtained from an alkaline solution. Aluminate can also refer to the polyatomic ion AlO3−
3.