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Practice each question, then open the answer or worked solution.
Which of the following complexes formed by Cu2+ ions is most stable?
| (i) Cu2+ + 4NH3 ⇌ [Cu(NH3)4]2+
(ii) Cu2+ + 4CN– ⇌ [Cu(CN)4]2–, (iii) Cu2+ + 2en ⇌ [Cu(en)2]2+, (iv) Cu2+ + 4H2O⇌ [Cu(H2O)4]2+, |
logK
logK logK logK |
11.6
27.3 15.4 8.9 |
Option (ii) is the answer.
The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes, [Co(NH3)6]3+, [Co(CN)6]3–, [Co(H2O)6]3+
Option (iii) is the answer.
When 0.1 mol CoCl3(NH3)5 is treated with an excess of AgNO3, 0.2 mol of AgCl
are obtained. The conductivity of the solution will correspond to
Option (ii) is the answer.
When 1 mol CrCl3.6H2O is treated with an excess of AgNO3, 3 mol of AgCl are obtained. The formula of the complex is :
Option (iv) is the answer.
The correct IUPAC name of [Pt(NH3)2Cl2] is
Option (i) is the answer.
The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?
Option (iii) is the answer.
Indicate the complex ion which shows geometrical isomerism.
Option (i) is the answer.
The CFSE for octahedral [CoCl6]4– is 18,000 cm–1. The CFSE for tetrahedral [CoCl4]2– will be
Option (iii) is the answer.
Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type [Pd(C6H5)2(SCN)2] and [Pd(C6H5)2(NCS)2] are
Option (i) is the answer.
The compounds [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl represent
Option (iv) is the answer.