Q. No.A solution containing 2.675 g of CoCl3.6NH3 (molar mass=267.5 g mol-1) is passed through a cation exhanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol-1). The formula of the complex is
(At. mass of Ag = 108 u)
1. [CoCl(NH3)5]Cl2
2. [Co(NH3)6Cl3
3. [CoCl2(NH3)4]Cl
4. [CoCl3(NH3)3]
(At. mass of Ag = 108 u)
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Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong?
| 1. | The complex is an outer orbital complex. |
| 2. | The complex gives a white precipitate with a silver nitrate solution. |
| 3. | The complex involves d2sp3 hybridization and is octahedral in shape. |
| 4. | The complex is paramagnetic. |
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The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes: CoCl3.6NH3, CoCl3 .5NH3, CoCl3.4NH3 respectively is:
1. 3AgCl, 1AgCl, 2AgCl
2. 3AgCl, 2AgCl, 1AgCl
3. 2AgCl, 3AgCl, 1AgCl
4. 1AgCl, 3AgCl, 2AgCl
The type of isomerism shown by the complex is:
| 1. | Geometrical isomerism | 2. | Coordination isomerism |
| 3. | Ionization isomerism | 4. | Linkage isomerism |
The geometry and magnetic behaviour of the complex [Ni(CO)4] respectively are:
1. Square planar and diamagnetic.
2. Tetrahedral and diamagnetic.
3. Square planar and paramagnetic.
4. Tetrahedral and paramagnetic.
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Which of the following has the longest C —O bond length? (Free C—O bond length in CO is 1.128 
2. [Fe(CO)4]2-
3. Mn(CO)6]+
4. Ni(CO)4
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Number of possible isomers for the complex [Co(en)2Cl2]Cl will be:
(en=ethylenediamine)
| 1. | 2 | 2. | 1 |
| 3. | 3 | 4. | 4 |
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The IUPAC name for complex ion, [Fe(CN)6]3- is:
| 1. | Hexacyanoiron(III) ion | 2. | Hexacyanitoferrate(III) ion |
| 3. | Tricynoferrate(III) ion | 4. | Hexacyanidoferrate(III) ion |
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