Write the chemical formulae of the following: (a) Magnesium chloride (b) Caldum oxide (c) Copper nitrate (d) Aluminium chloride (e) Calcium carbonate.
(a) Magnesium chloride Symbol → Mg Cl Change → +2 –1 Formula → MgCl2 (b) Calcium oxide Symbol → Ca O Charge → +2 –2 Formula → CaO (c) Copper nitrate Symbol → Cu NO3 Change → +2 –1 Formula → Cu(NO3)2 (d) Aluminium chloride Symbol → Al Cl Change → +3 –1 Formula → A1Cl3 (d) Calcium carbonate Symbol → Ca CO3 Change → +2 –2 Formula → CaCO3
