10.11 Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why ?
10.10 When an alkali metal dissolves in liquid ammonia the solution can acquire different colours. Explain the reasons for this type of colour change.
10.8 Explain why can alkali and alkaline earth metals not be obtained by chemical reduction methods?
10.6 Compare the alkali metals and alkaline earth metals with respect to (i) ionisation enthalpy (ii) basicity of oxides and (iii) solubility of hydroxides