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प्रश्न
What is a chelate complex?
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उत्तर
When a di- or polydentate ligand uses its two or more donor atoms simultaneously to bind a single metal ion, it is said to be a chelate ligand. Such complexes are called chelate complexes.
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संबंधित प्रश्न
Write IUPAC names of the following compounds
Write the IUPAC name of the following coordination compound:
[Cr(NH3)4(H2O)2]Cl3
Which of the following complexes formed by \[\ce{Cu^2+}\] ions is most stable?
Arrange the following complexes in the increasing order of conductivity of their solution:
[Co(NH3)3Cl3], [Co(NH3)4Cl2]Cl, [Co(NH3)6]Cl3, [Cr(NH3)5Cl]Cl2
A complex of the type \[\ce{[M(AA)2X2]^{n+}}\] is known to be optically active. What does this indicate about the structure of the complex? Give one example of such complex.
Match the coordination compounds given in Column I with the central metal atoms given in Column II and assign the correct code:
| Column I (Coordination Compound) | Column II (Central metal atom) |
| A. Chlorophyll | 1. rhodium |
| B. Blood pigment | 2. cobalt |
| C. Wilkinson catalyst | 3. calcium |
| D. Vitamin B12 | 4. iron |
| 5. magnesium |
Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.
Reason: Unpaired electrons are present in their d-orbitals.
Oxidation number of cobalt in K[Co(CO)4] is
Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.
What is meant by the chelate effect? Give an example.
