The correct order for wavelengths of light absorbed in the complex ions $[CoCl(NH_{3})_{5}]^{2+}$, $[Co(NH_{3})_{6}]^{3+}$ and $[Co(CN)_{6}]^{3-}$ is

  • A
    $[CoCl(NH_{3})_{5}]^{2+} > [Co(NH_{3})_{6}]^{3+} > [Co(CN)_{6}]^{3-}$
  • B
    $[Co(NH_{3})_{6}]^{3+} > [Co(CN)_{6}]^{3-} > [CoCl(NH_{3})_{5}]^{2+}$
  • C
    $[Co(CN)_{6}]^{3-} > [CoCl(NH_{3})_{5}]^{2+} > [Co(NH_{3})_{6}]^{3+}$
  • D
    $[Co(NH_{3})_{6}]^{3+} > [CoCl(NH_{3})_{5}]^{2+} > [Co(CN)_{6}]^{3-}$

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