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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2004

  • question_answer
    An element \[(X)\] forms compounds of the formulae \[XC{{l}_{3}},\] \[{{X}_{2}}{{O}_{5}}\] and \[C{{a}_{3}}{{X}_{2}}\] but does not form \[XC{{l}_{5}}\]. Which of the following is the element X?

    A)  \[B\]                                    

    B)  \[Al\]

    C)  \[N\]                                   

    D)  \[P\]

    Correct Answer: C

    Solution :

    Except nitrogen all elements of this group (VII A) form two series of halides. viz-trihalide and pent halides. Nitrogen forms only  trihalides and does not form pent halides due to absence of d-orbitals.


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