Write down the valency of
(i) Magnesium chloride
(ii) Aluminium sulphate
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the chemical formula of magnesium chloride is Cu(NO3)2. We have to know that the atomic number of aluminium is 13 and has a valency of 3 atoms and chlorine atom has a valency of 1. Since it has 7 electrons in the outermost shell.
Explanation:
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