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AFMC AFMC Solved Paper-2003

  • question_answer
    The transition metal with least atomic number is :

    A) Os                                          

    B) Zr

    C) Pt                                           

    D) Ru

    Correct Answer: B

    Solution :

    Transition elements may be defined as elements whose atoms or simple ions contain partially filled d-orbitals. This definition does not cover zinc, cadmium and mercury as they have completely filled d-orbital consequently they do not exhibit characteristic properties of transition elements Zr = 40, Os = 76, Pt = 78, Ru = 44 (Least at. no.)


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