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It can form covalent and ionic compounds. It has an extensive chemistry.

Its principal oxidation state is +3.

It forms an oxide, Al2O3, which is amphoteric, forming aluminate salts. It also forms similar compounds with the other members of the oxygen familyI e/ Al2S3. It forms Al(OH)3 which is an industrially significant. It reacts with the halogens to form AlX3, which are generally molecular. It reacts with the nitrogen family to form AlN, AlP etc which are semiconductors. It forms a carbide, Al4C3. It forms a hydride AlH3 and salts of AlH4- iion useful in organic synthesis. It forms many salts as the Al3+ ion usually hydrated, one significant one are the sulfate Al2(SO4)3.(H2O)18

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12y ago

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