In which of the following octahedral complexes of Co Z -27 will the magnitude of -0 be the highest-A- - Co NH 36-3-B- - Co CN 6-3- - Co C 2 O 43-3-D- - Co H 2 O 6-3-

The correct option is B [Co(CN)_6]^3 The spectrochemical series is given below: I− nbsp; lt; Br− nbsp; lt; S2− nbsp; lt; SCN− nbsp; lt; Cl− ...

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Standard XII

Chemistry

Characteristics of Equilibrium Constant

In which of t...

Question

In which of the following octahedral complexes of $C o$ (Z = 27) will the magnitude of $Δ_{0}$ be the highest?

[C o (N H_{3})_{6}]^{3 +}

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[C o (C N)_{6}]^{3 -}

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[C o (C_{2} O_{4})_{3}]^{3 -}

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[C o (H_{2} O)_{6}]^{3 +}

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Solution

The correct option is B $[C o (C N)_{6}]^{3 -}$
The spectrochemical series is given below:

I⁻ < Br⁻ < S²⁻ < SCN⁻ < Cl⁻ < NO₃⁻ < N₃⁻ < F⁻ < OH⁻ < C₂O₄²⁻ < H₂O < NCS⁻ < CH₃CN < py < NH₃

< en < bipy < phen < NO₂⁻ < PPh₃ < CN⁻ < CO
$C N^{-}$ is the strongest of all the ligands given in the options, and hence, $Δ_{0}$ is highest for $[C o (C N)_{6}]^{3 -}$ .

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Similar questions

The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes, $[C o (N H_{3})_{6}]^{3 +}, [C o (C N)_{6}]^{3 -}, [C o (H_{2} O)_{6}]^{3 +}$
$[C o (N H_{3})_{6}]^{3 +}, [C o (C N)_{6}]^{3 -}, [C o (H_{2} O)_{6}]^{3 +}$
(a) $[C o (C N)_{6}]^{3 -} > [C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +}$
(b) $[C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +} > [C o (N H_{3})_{6}]^{3 +}$
(c) $[C o (H_{2} O)_{6}]^{3 +} > [C o (N H_{3})_{6}]^{3 +} > [C o (C N)_{6}]^{3 -}$
(d) $[C o (C N)_{6}]^{3 -} > [C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +}$

Q. In which of the following octahedral complex of

C o

(Z = 27) will be magnitude of

Δ_{0}

be the highest ?

Q. The correct increasing order of wavelengths of absorption in the visible region for the complexes of

C o^{3 +}

is:

Q. Correct increasing order for the wavelength of absorbtion in the visible region for the complexes of

C o^{3 +}

is:

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of $C o^{3 +}$ is

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In which of the following octahedral complexes of Co (Z = 27) will the magnitude of Δ0 be the highest?

In which of the following octahedral complexes of $C o$ (Z = 27) will the magnitude of $Δ_{0}$ be the highest?