Question

out of sodium and potassium which is a stronger reducing agent and why

Answer 1

sodium  

because it is less reactive than the k

Answer 2

$\underline{\underline{\mathfrak{\Large{Heya Friends}}}}$
Alkali metals are very good reducing agents because of their great tendency to lose electrons. The reducing character increases from Na to Cs. However, Li is stronger reducing agent than Na due to greater hydration energy. Explanation: An element, which acts as a reducing agent, must have low ionization energy.
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