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Haryana PMT Haryana PMT Solved Paper-2011

  • question_answer
    The first-four ionisation energy values of an element are\[191\], \[578\] , \[872\]and\[5962\text{ }kcal\]. The number of valence electrons in the element is

    A)  \[1\]                                    

    B)  \[2\]    

    C)  \[3\]                                    

    D)  \[4\]

    Correct Answer: C

    Solution :

                    The number of valence electrons in the element is three since the IV th IE is very high i.e., the fourth electron is to be removed from stable configuration.


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