In group IA, of alkali metals, the ionisation potential decreases on moving down the group. Therefore, lithium is a strongest reducing agent. True / False.
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The reducing character increases from sodium to caesium.
However lithium is the strongest reducing agent. The greater reducing character of Li than Na is due to its greater hydration energy. Lithium being small in size has high ionization energy.
The alkali metals have low value of ionization energy which decreases down the group and so can easily lose their valence electron and thus act as good reducing agents.
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