JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2008

  • question_answer
        Which of the following is diamagnetic?

    A)  \[{{H}_{2}}\]                                     

    B)  \[{{O}_{2}}\]

    C)  \[L{{i}_{2}}\]                                     

    D)  \[H{{e}_{2}}\]

    Correct Answer: C

    Solution :

                    Molecules or ion having no unpaired electrons are diamagnetic, eg, \[L{{i}_{2}}=6{{e}^{-}}=\sigma 1{{s}^{2}},\overset{*}{\mathop{\sigma }}\,1{{s}^{2}},\sigma 2{{s}^{2}}\]


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