give formula and valency of:-
1. aluminate
2.chromate
3.cupric
4.aluminium
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give formula and valency of:-
1. aluminate
2.chromate
3.cupric
4.aluminium
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Answer:
Aluminate is an anion compound which is made from one or more aluminium and oxygen atoms. Aluminium is a silvery-white, soft and ductile metal in the boron group of the Periodic Table. The formula of aluminate is Al03 and the valency is -1.
2 Valence electrons are those electrons which are present in the outermost shell of an atom. In case of chromate the valency shown by the chromium is 2. Hence the formula of chromate ion is CrO42− and valency is 2.
3 cupric Cu +2.
4Aluminium is a silvery-white, soft and ductile metal in the boron group of the Periodic Table. The formula of aluminate is Al03 and the valency is -1.
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