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NEET Chemistry Coordination Chemistry Question Bank Self Evaluation Test - Co-ordination Compounds

  • question_answer
    In nitroprusside ion, the iron and NO exist as Fe (II) and \[\overset{+}{\mathop{N}}\,O\] rather than Fe(III) and NO. This can be established by    

    A) estimating the concentration of iron

    B) estimating the concentration of \[C{{N}^{-}}\]

    C) thermally decomposing the compound

    D) measuring the solid state magnetic moment

    Correct Answer: D

    Solution :

    [d] Fe(II) state -\[3{{d}^{6}}\]; due to strong \[C{{N}^{-}}\] ligand spin paired complex \[({{d}^{2}}s{{p}^{3}})\] will be formed. Hence \[n=0,\mu =OB.M\] Fe(III) state \[3{{d}^{5}};<{{d}^{2}}s{{p}^{3}}\] complex, n = 1, \[\mu =1.73B.M.\]


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