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AMU Medical AMU Solved Paper-1997

  • question_answer
    Which of the following is not a transition metal?

    A)  \[Cr\]               

    B)  \[Mn\]

    C)  \[Sn\]               

    D)  \[Cu~\]

    Correct Answer: C

    Solution :

    : Transition elements may be defined as the elements in which last electron enters in d- subshell of their penultimate shell.
    \[Cr\] \[Mn\] \[Sn\] \[Cu\]
    \[3{{d}^{5}}4{{s}^{1}}\] \[3{{d}^{5}}4{{s}^{2}}\] \[5{{s}^{2}}5{{p}^{2}}\] \[3{{s}^{10}}4{{s}^{1}}\]
    Sn is a\[p-\]block and not a transition element.


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