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Transition Metals question

2022 · Q20
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Transition Metals question

2022 · Q20

IIT JAMChemistryTransition MetalsMCQ+2 / −0.67
The order of increasing CO stretching frequencies in [Co(CO)_{4}]^{-}, [Cu(CO)_{4}]^{+}, [Fe(CO)_{4}]^{2-} and [Ni(CO)_{4}] is
  1. A
    [Cu(CO)_{4}]^{+} < [Ni(CO)_{4}] < [Co(CO)_{4}]^{-} < [Fe(CO)_{4}]^{2-}
  2. B
    [Fe(CO)_{4}]^{2-} < [Co(CO)_{4}]^{-} < [Ni(CO)_{4}] < [Cu(CO)_{4}]^{+}
  3. C
    [Co(CO)_{4}]^{-} < [Fe(CO)_{4}]^{2-} < [Cu(CO)_{4}]^{+} < [Ni(CO)_{4}]
  4. D
    [Ni(CO)_{4}] < [Cu(CO)_{4}]^{+} < [Co(CO)_{4}]^{-} < [Fe(CO)_{4}]^{2-}
View written solutionFree

Correct answer: B

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