Question

why alkali metals cannot be used in voltaic cell

Answer 1

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here is ur answer

Alkali metal can not be used in voltaic cells. ... High negative values of standard electrode potential of Alkali metals indicate ease of oxidation. Since in voltaic cells water is used as solvent and Alkali metals are readily oxidized in water. Therefore they can not be used in voltaic cells.

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Answer 2

Answer:

Since alkali metals are highly reactive in nature and they have very high negative reducing potentials.

Explanation:

Alkali metals are the most electro-positive group of periodic tables. The members of alkali metals have a very high tendency of giving electrons and thereby they have negative standard electrode potential. And having such a high negative standard electrode potential makes it easier to react with the solvent used in voltaic cells and thus it reacts very fast and hence they can't be used in voltaic cells.

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