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Questions 2.2.3

  1. Complete Table 2.2.3 to show the formulae of some compounds of alkali earth metals. The formula of beryllium oxide is provided as an example.
    Table 2.2.3: Some compounds of alkali earth metals
    Ion combined with metal Beryllium Magnesium Calcium
    Oxide (O2-) BeO
    Hydroxide (OH-)
    Chloride (Cl-)
    Hydrogencarbonate (HCO3-)
    Sulphate (SO42-)
    Nitrate (NO3-)

  2. Name all the compounds whose formulae you have written.


Answers to Questions 2.2.3

  1. Ion combined with metal Beryllium Magnesium Calcium
    Oxide (O2-) BeO MgO CaO
    Hydroxide (OH-) Be(OH)2 Mg(OH)2 Ca(OH)2
    Chloride (Cl-) BeCl2 MgCl2 CaCl2
    Carbonate (HCO3-) BeCO3 MgCO3 CaCO3
    Hydrogencarbonate (HCO3-) Mg(HCO3)2 Ca(HCO3)2
    Sulphate (SO42-) BeSO4 MgSO4 CaSO4
    Nitrate (NO3-) Be(NO3)2 Mg(NO3)2 Ca(NO3)2