JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Valency and oxidation state

  • question_answer Elements A and B with their respective electronic configurations \[3{{d}^{10}}\,4{{s}^{1}}\] and \[4{{d}^{10}}\,5{{s}^{1}}\] in their outermost shell are

    A) Both non-metals

    B) Both coinage metals

    C) A is a non-metal and B is coinage metal

    D) A is a coinage metal and B is non-metal

    Correct Answer: B

    Solution :

    Both are coinage metals \[3{{d}^{10}}\,4{{s}^{1}}-Cu\];   \[4{{d}^{10}}5{{s}^{1}}-Ag\]


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