Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?

(N/A) In the process of chemical reduction,metal oxides are reduced using a stronger reducing agent.
Alkali metals and alkaline earth metals are themselves among the strongest reducing agents.
Since there are no available reducing agents that are stronger than these metals,their oxides cannot be reduced by chemical reduction methods.
Therefore,they are typically obtained by electrolytic reduction of their fused salts.