List of top Chemistry Questions on Coordination complexes

Which of the following is the most stable complex?

An organic compound with the molecular formula \(\text{C}_7\text{H}_8\text{O}\) is completely insoluble in water but dissolves readily in an aqueous \(\text{NaOH}\) solution. When treated with bromine water, it forms a white precipitate. Identify the compound.

Match List - I with List - II

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Given below are two statements:
Statement I: The M – C \(\sigma\) bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant d-orbital of the metal
Statement II: The M – C \(\pi\) bond is formed by the donation of a pair of electrons from a filled d-orbital of metal into the vacant antibonding \(\pi\)* orbital of carbon monoxide.
In the light of the above statements, choose the correct answer from the options given below:

How many ions per molecule are produced from the complex [Co(NH\(_3\))\(_6\)]Cl\(_3\) in solution?

Identify transition metal complexes which are not octahedral in shape.
(A) $[Co(NH_3)_6]^{3+}$
(B) $[Ni(CO)_4]$
(C) $[COCI(NH_3)_5]^{2+}$
(D)$ [CoCl_2(NH_3)_4]^{+}$
(E)$[PtCl_4]^{2-}$
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Co-ordination compounds present in following biological systems :
A. Chlorophyll
B. Haemoglobin
C. Vitamin B₁₂
D. Enzymes
E. Roots
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Inner orbital complex among the following is :
(A) $[Co(NH_3)_6]^{3+}$
(B) $[CoF_6]^{3-}$
(C) $[Ni(CN)_4]^{2-}$
(D) $[MnCl_6]^{3-}$
(E) $[FeF_6]^{3-}$
Choose the correct answer from the options given below: