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Colours in Coordination Compounds

Which of the ...

Question

Which of the following compounds is not colored yellow?

A

Z n_{2} [F e (C N)_{6}]

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B

K_{3} [C o (N O_{2})_{6}]

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C

(N H_{4})_{3} [A s (M o_{3} O_{10})_{4}]

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D

B a C r O_{4}

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Solution

The correct option is A $Z n_{2} [F e (C N)_{6}]$
$Z n_{2} [F e (C N)_{6}]$ is white in colour.
$K_{3} [C o (N O_{2})_{6}]$ is yellow in colour.
$(N H_{4})_{3} [A s (M o_{3} O_{10})_{4}]$ is yellow in colour.
$B a C r O_{4}$ is yellow in colour.

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Similar questions

Q. Which one is more stable in the following pairs of complexes? Give reasons.
i)

[C o (N O_{2})_{6}]^{4 -}

[C o (N O_{2})_{6}]^{3 -}

K_{4} [F e (C N)_{6}]

K_{3} [F e (C N)_{6}]

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

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

Q. Which of the following compounds is not colored?

Q. Which of the following compounds does not evolve a colored gas on decomposition?

Q. The compound

K_{3} [C o {(N O_{2})}_{6}]

Q. The hybridization states of the central atom in the complexes

[F e (C N)_{6}]^{3 -}, [F e (C N)_{6}]^{4 -}

[C o (N O_{2})_{6}]^{3 -}

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