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JIPMER Jipmer Medical Solved Paper-2002

  • question_answer
    An element is in \[{{M}^{3+}}\] form. Its electronic configuration is \[[Ar]\,4{{s}^{1}}\]. What is the atomic number of element?

    A)  21                         

    B)         19                         

    C)         24                         

    D)         22

    Correct Answer: D

    Solution :

    When element is in \[{{M}^{3+}}\] form, its electronic configuration is \[[Ar]\,4{{s}^{1}},\]hence, electronic configuration of M will be \[[Ar]\,4{{s}^{2}}3{{d}^{2}}.\] Hence, atomic number of element (M) = 18 + 4 = 22.


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