Q5) Show by Criss cross method, how the formula of each of these is written-
a) Aluminium oxide, Magnesium sulphide, Sodium bromide, Zinc nitride
Calcium chloride
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Answer:
Chemical formula of the following is as follows:
(a) Magnesium chloride = MgCl
2
(b) Calcium oxide = CaO
(c) Copper nitrate = Cu(NO
3
)
2
(d) Aluminium chloride = AlCl
3
(e) Calcium carbonate = CaCO
3
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