High melting point
Application in engineering
It is extracted by electrolysis.
Its chloride is covalent.
It is soluble in concentrated nitric acid
It is soluble in sodium hydroxide solution
It is an ionic compound.
Aluminium atom undergoes sp2 hybridisation.
It is a white solid which melts when heated.
There are two coordinate covalent bonds in the molecule.
[Al(H2O)6]3+ ion receives a proton in aqueous solution.
[Al(H2O)6]3+ ion donates a proton in aqueous solution.
[Al(H2O)6]3+ ion disproportionate and produces H+ (aq) ions.
Acidic [Al(H2O)6OH]2+ ions are produced in solution.
The Al3+ ion has a high charge density and developes covalent character in its ionic compounds
In water, the Al3+ ions exist as a complex ion [Al(H2O)6]3+.
An aqueous solution of Al3+ ions has a pH = 7.
If hydroxide ions are added to a solution of an aluminium salt, a white precipitate is formed.
Al (s) + 4OH- (aq) → [Al(OH)4]- (aq)
Al (s) + 6OH- (aq) → [Al(OH)6]3- (aq)
Al (s) + 4H2O (l) → [Al(H2O)4]- (aq)
Al (s) + 3H2O (l) + OH- (aq) → [Al(OH)4]- (aq) + 3/2 H2 (g)
Aluminium oxide and hydrogen
Aluminium chloride and hydrogen
Aluminium hydroxide and hydrogen
Aluminium hydroxide and oxygen
Both aluminium fluoride and aluminium chloride are covalent compounds
Both aluminium fluoride and aluminium chloride are ionic compounds
Aluminium fluoride is an ionic compound while aluminium chloride is an covalent compound
Aluminium fluoride is an covalent compound while aluminium chloride is an ionic compound