Multiple Choice QuestionsThe ratio of anion radius to cation radius of a crystal is 10 : 9.3. Then, the coordination number of the cation in the crystal is
2
6
4
8
D.
8
Given, the radius ratio of anion to cation =10:9.3
The radius ratio of cation to anion
=9.3:10
=0.93
When the cation to anion ratio lie between 0.732 to 1.00, the coordination number is 8. Thus, the coordination number ofthe cation in the crystal is 8.
Which one of the following gives Prussian blue colour?
Fe2[Fe(CN)6]
Na4[Fe(CN)6]
Fe3[Fe(CN)6]3
Fe4[Fe(CN)6]3
A coordinate complex contains Co3+, Cl- and NH3. When dissolved in water, one mole of this complex gave a total of 3 moles of ions. The complex is
[Co(NH3)6]Cl3
[Co(NH3)5Cl]Cl2
[Co(NH3)4Cl2]Cl
[Co(NH3)3Cl3]
When AgNO3 solution is added in excess to 1M solution of CoCl3. X NH3 one mole of AgCl is formed. What is the value of X?
1
4
3
2
In which of the following coordination compounds, the central metal ion is in zero oxidation state?
[Fe(H2O)6]Cl3
K4[Fe(CN)6]
Fe(CO)5
[Fe(H2O)6]Cl2
Match the following
| Column I | Column II |
| (A) sp3 | (i) [Co(NH3)6]3+ |
| (B) dsp2 | (ii) [Ni(CO)4] |
| (C) sp3d2 | (iii) [Pt(NH3)2Cl2] |
| (D) d2sp3 | (iv) [CoF6]3- |
| (v) [Fe(CO)5] |
A B C D
(v) (ii) (i) (iii)
A B C D
(ii) (iii) (iv) (v)
A B C D
(ii) (iii) (i) (v)
A B C D
(iii) (ii) (iv) (i)
Select the correct IUPAC name [Co(NH3)5(CO)3]Cl.
Penta ammonia carbonate cobalt (III) chloride
Pentammine carbonate cobalt chloride
Pentammine carbonato cobalt (III) chloride
Cobalt (III) pentammine carbonate chloride
Identify, from the following, the diamagnetic, tetrahedral complex
[Ni(Cl)4]2-
[Co(C2O4)3]3-
[Ni(CN)4]2-
[Ni(CO)4]
Which type of isomers are [Co(NH3)5Br]SO4 and [Co(NH3)5SO4]Br?
Hydrate isomers
Ionisation isomers
Ligand isomers
Coordination isomers
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