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NEET Sample Paper NEET Sample Test Paper-92

  • question_answer
    An element (X) forms compounds of the formula \[XC{{l}_{3}},\] \[{{X}_{2}}{{O}_{5}}\] 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 :

    [c] Nitrogen can form \[NC{{l}_{3}},\]\[{{N}_{2}}{{O}_{5}}C{{a}_{3}}{{N}_{2}}\] and not \[NC{{l}_{5}}\] since it has no d atomic orbitals in valence shell.


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