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J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    In \[\text{H}{{\text{e}}_{\text{2}}}\text{,}\]the electrons in bonding and anti-bonding orbitals are

    A)  2, 2     

    B)  4, 2       

    C)  4, 0     

    D)  2, 4

    Correct Answer: A

    Solution :

     Number of electron in \[H{{e}_{2}}=4\] MO configuration of \[H{{e}_{2}}=\sigma 1{{s}^{2}},{{\sigma }^{*}}1{{s}^{2}}\] Here, \[{{N}_{b}}\](bonding electrons) \[=2\] \[{{N}_{a}}\](antibonding electrons) =2


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