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प्रश्न
Explain the following, giving two examples:
Coordination number
उत्तर
The coordination number (CN) of a metal ion in a complex can be defined as the number of ligand donor atoms to which the metal is directly bonded. For example, in the complex ions, [PtCl6]2− and [Ni(NH3)4]2+, the coordination numbers of Pt and Ni are 6 and 4, respectively. Similarly, in the complex ions, [Fe(C2O4)3]3− and [Co(en)3]3+, the coordination number of both Fe and Co is 6 because \[\ce{C2O^{2−}4}\] and en (ethane-1, 2-diamine) are didentate ligands.
संबंधित प्रश्न
Ligand (en) is an example of ___________.
Which of the following complexes formed by \[\ce{Cu^2+}\] ions is most stable?
When 0.1 mol \[\ce{CoCl3 (NH3)5}\] is treated with excess of \[\ce{AgNO3}\], 0.2 mol of \[\ce{AgCl}\] are obtained. The conductivity of solution will correspond to ______.
Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code:
| Column I (Compound) | Column II (Oxidation state of Co) |
| A. \[\ce{[Co(NCS)(NH3)5](SO3)}\] | 1. + 4 |
| B. \[\ce{[Co(NH3)4 CL2]SO4}\] | 2. 0 |
| C. \[\ce{Na4[Co(S2O3)3]}\] | 3. + 1 |
| D. \[\ce{[Co2(CO)8]}\] | 4. + 2 |
| 5. + 3 |
Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.
Reason: Unpaired electrons are present in their d-orbitals.
Which one of the following does not achieve an octet of electrons in the central atom?
The complex which has no d electrons in the central atom is:-
The correct order of the spin-only magnetic moment of metal ions in the following low spin complexes,
\[\ce{[V(CN)6]^{4-}, [Fe(CN)6]^{4-}, [Ru(NH3)6]^{3+} and [Cr(NH3)6]^2}\] is:
Explain the following, giving two examples:
Ligand
Explain the following, giving two examples:
Heteroleptic
