J & K CET Medical J & K - CET Medical Solved Paper-2013

  • question_answer
    The bond order of N3 on the basis of molecular orbital theory is [Atomic number of\[N=71\]

    A)  3       

    B)  2.5     

    C)  2       

    D)  1.5

    Correct Answer: B

    Solution :

     We know that N3 molecule is having 14 electrons so, \[{{N}_{2}}=14\] \[N_{2}^{+}=14-1=13,\]according to MOT (Molecular orbital theory) the configuration will be \[N_{2}^{+}=KK\,{{\sigma }^{*}}2{{s}^{2}}\,\pi 2p_{x}^{2}\,\pi 2p_{y}^{2}\,\sigma 2p_{z}^{1}\] Bond order\[=\frac{1}{2}[Bonding-Antibonding]\] \[=\frac{1}{2}[7-2]=2\frac{1}{2}=2.5\]


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