JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    Zinc and mercury do not show variable valency like d-block elements because [RPMT 2000; MP PMT 2000]

    A) They are soft

    B) Their d- shells are complete

    C) They have only two electrons in the outermost subshell

    D) Their d-shells are incomplete

    Correct Answer: B

    Solution :

    \[_{30}Zn\] and \[_{80}Hg\] have their d orbitals completely filled so they do not show any variable valency.


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