Question

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

Answer 1

In the process of chemical reduction, oxides of metals are reduced using a stronger reducing agent.
Alkali metals and alkaline earth metals are among the strongest reducing agents and the reducing agents stronger than them are not available.
Therefore, they cannot be obtained by chemical reduction of their oxides.

$\text{Final answer}:$ Due to high reduction nature