Which of the following has the maximum number of unpaired electrons?
- A$Fe^{3+}$
- B$Fe^{2+}$
- C$Co^{2+}$
- D$Co^{3+}$
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Which of the following statements is correct?
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View SolutionExplain on what factors the ionization enthalpies of elements having $d^{n}$ configuration depend upon? Explain the variation in ionization enthalpies of transition elements in the $3d$ series.
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View SolutionAssertion : Transition metals show variable valency.
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Reason : Transition metals have a large energy difference between the $ns^2$ and $(n-1)d$ electrons.
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