The correct statements about ethane-1,2-diamine as a ligand are:
(a) | It is a neutral ligand |
(b) | It is a bidentate ligand |
(c) | It is a chelating ligand |
(d) | It is a unidentate ligand |
1. | a and b | 2. | b and c |
3. | a, b and c | 4. | a, c and d |
Number of geometrical isomer(s) possible for the complex [Cr(C2O4)3]3- is/are:
1. | 1 | 2. | 3 |
3. | 0 | 4. | 2 |
The correct statement among the following regarding \(FeCO_5\) is:
1. Tetranuclear
2. Mononuclear
3. Trinuclear
4. Dinuclear
The correct electronic configuration of the central atom in based on crystal field theory is:
1. | \(e^4 ~t_{2 g}^2 \) | 2. | \(t_{2 g}^4 ~e_g^2 \) |
3. | \(t_{2 g}^6 ~e_g^0 \) | 4. | \(e^3 ~t^3_{2g}\) |
A complex has a molecular formula MSO4Cl.6H2O. Its aqueous solution gives white precipitate with barium chloride solution and no precipitate is obtained when it is treated with silver nitrate solution.
If the secondary valence of the metal is six, the correct representation of the complex is:
1. [M(H2O)4Cl]SO4.2H2O
2. [M(H2O)6]SO4
3. [M(H2O)5Cl]SO4.H2O
4. [M(H2O)3Cl]SO4.3H2O
A metal ion present in vitamin B12 is:
1. | Fe(II) | 2. | Co(III) |
3. | Zn(II) | 4. | Ca(II) |
The crystal field splitting energy is:
1. | The heat of formation between the two levels (eg and t2g) |
2. | The combined pairing energy of the two levels (eg and t2g) |
3. | The combined energy of the three levels in octahedral |
4. | The combined energy of the two levels ( and ) |
[Cr(NH3)6]3+ is paramagnetic ,while is diamagnetic because:
1. | Electrons in the 3d orbitals remain unpaired in |
2. | Electrons in the 3d orbitals remain unpaired in [Cr(NH3)6]3+ |
3. | Electrons in the 3p orbitals remain unpaired in [Cr(NH3)6]3+ |
4. | Electrons in the 3p orbitals remain unpaired in |
The isomerism displayed by K3[Co(NO2)6] and K3[Co(ONO)6] is:
1. | Linkage | 2. | Co-ordination |
3. | Ionization | 4. | Geometrical |