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KVPY Sample Paper KVPY Stream-SX Model Paper-8

  • question_answer
    The difference in the number of unpaired electrons of a metal ion in its high-spin and low-spin octahedral complexes is two. The metal ion is:

    A) \[N{{i}^{2+}}\]                      

    B) \[F{{e}^{2+}}\]

    C) \[C{{o}^{2+}}\]            

    D) \[M{{n}^{2+}}\]

    Correct Answer: C

    Solution :

    \[C{{o}^{2+}}\] high spin \[t_{2g}^{5}\,e_{g}^{2}\] '3' unpaired electrons \[C{{o}^{2+}}\] low spin \[t_{2g}^{6}\,e_{g}^{1}\] '1' unpaired electron Difference is \[3-1=2\]


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