a) Write the chemical formulae of the following compounds by criss-cross method. [5] (i) Aluminium phosphate (ii) Ammonium carbonate (iii) lead(II) oxide (iv) zinc nitrate (v) sodium hydroxide,
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Write the chemical formula of the following.
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate
Solution
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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