Why does sodium have less negative electrode potential?
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Negative electrode potential means the metal electrode is donating electron(s) to another electrode. In other words it is under oxidation process and is reducing the other electrode. ... zinc has negative electrode potential value (-0.76 V).
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Because reduction potential depends on two factors hydration energy and ionisation energy.
Ionisation energy favoura sodium but hydration energy favours lithium.
But when we add hydration and ionisation energy overall, negative energy is higher for lithium.
That's why releasing electron from lithium is more easy in aqueous condition..
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