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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Mock Test - The s-Block Elements

  • question_answer
    K, Ca and Li metals may be arranged in the decreasing order of their standard electrode potentials as

    A) K, Ca, Li          

    B) Li, K, Ca

    C) Li, Ca, K         

    D) Ca, Li, K

    Correct Answer: B

    Solution :

    [b] \[L{{i}^{+}}+{{e}^{-}},{{E}^{o}}=-3.05V\]             \[{{K}^{+}}+{{e}^{-}}\to K,{{E}^{o}}=-2.87V\] \[C{{a}^{+2}}+2{{e}^{-}}\to Ca,{{E}^{o}}=-2.87V\]


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