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
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
C.
Fe(CO)5
Let oxidation state of central atom = x
For, [Fe(H2O)6]Cl3
x + 6 × 0 + 3 (-1) = 0
x + 0 - 3 = 0
x = +3
For K4[Fe(CN)6]
4 × 1 + x + 6 (-1) = 0
x - 2 = 0
x = +2
For Fe(CO)5,
x + 5 × 0 = 0
x = 0
For [Fe(H2O)6Cl2
x + 6 × 0 + 2(-1)
x - 2 = 0
x = +2
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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