Single Choice

Which of the following compounds is not colored yellow?

AZn2[Fe(CN)6]
Correct Answer
BK3[Co(NO2)6]
C(NH4)3[As(Mo3O10)4]
DBaCrO4

Solution

In the complex $$Zn_2[Fe(CN)_6]$$, the iron atom has oxidation state of +2. Its outer electronic configuration is $$3d^6$$.
Cyanide ligand ($$CN^-$$) is a strong ligand and it causes spin pairing. Hence, all the 6 electrons in 3d are paired and present in $$t_{2g}$$ level.

Hence, the complex is colorless.

SIMILAR QUESTIONS

Coordination Compounds

Among the following, the species that is both paramagnetic and coloured is :

Coordination Compounds

What is the relationship between observed color of the complex and the wavelength of light absorbed by the complex?

Coordination Compounds

The colourless species is:

Coordination Compounds

Which of the following compound is expected to be colourless?

Coordination Compounds

Which of the following statements is/are correct?

Coordination Compounds

Which of the following is correct about $$\underset{I}{KFe^{II}[Fe(CN)_6]}$$ and $$\underset{II}{KFe^{III}[Fe(CN)_6]}$$ complex compounds?

Coordination Compounds

If $$MCl_2$$ salt is white, then comment on colour of its iodide salt.

Coordination Compounds

Choose incorrect statement.

Coordination Compounds

Why a solution of $$[Ni(H_2O)_6]^{2+}$$ is green while a solution of $$[Ni(CN)_4]^{2-}$$ is colourless? (At no. of $$Ni=28$$)

Coordination Compounds

Answer the following question: $$[Ni(H_2O)_6]^{2+}$$ is green whereas $$[Ni(CN)_4]^{2-}$$ is colourless. Why? (At no. of $$Ni=28$$)

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