AFMC AFMC Solved Paper-2010

  • question_answer
    The shape of \[\text{I}{{\text{F}}_{\text{7}}}\]molecule is

    A)  octahedral

    B)  trigonal bipyramidal

    C)  tetrahedral

    D)  pentagonal bipyramidal

    Correct Answer: D

    Solution :

                     Number of hybrid orbitals, \[H=\frac{1}{2}[V+M+A-C]\](where, V = number of valence electrons of central atom) M = number of monovalent atoms A = negative charge C = positive charge] \[\therefore \]   \[H=\frac{1}{2}[7+7+0-0]=7\] Thus, the hybridisation of\[\text{I}{{\text{F}}_{\text{7}}}\]is \[s{{p}^{3}}{{d}^{3}}\]and its geometry is pentagonal bipyramidal.


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