• question_answer $K,$ $Ca$ and $Li$ metals may be arranged in the decreasing order of their standard electrode potentials as [CPMT 1990] A) $K,$ $Ca,$ $Li$ B) $Li,$ $K,$ $Ca$ C) $Li,$ $Ca,$ $K$ D) $Ca,$ $Li,$ $K$

$L{{i}^{+}}+{{e}^{-}}\to Li$, ${{E}^{o}}=-3.05\ V$ ${{K}^{+}}+{{e}^{-}}\to K$, ${{E}^{o}}=-2.93\ V$ $C{{a}^{+2}}+2{{e}^{-}}\to Ca$, ${{E}^{o}}=-2.87\ V$