Coordination Compounds

Total number of unpaired electrons in the complex ions [Co(NH3)6]3+ and [NiCl4]2- is .

Consider the following complexes (A) [CoCl(NH3)5]2+, (B) [Co(CN)6]3-, (C) [Co(NH3)5(H2O)]3+, (D) [Cu(H2O)4]2+ The correct order of A, B, C and D in terms of wavenumber of light absorbed is :

1. D < A < C < B
2. B < C < A < D
3. C < D < A < B
4. A < C < B < D

Match List I with List II. Choose the correct answer from the options given below :

1. A-IV, B-III, C-I, D-II
2. A-III, B-I, C-IV, D-II
3. A-I, B-III, C-IV, D-II
4. A-III, B-IV, C-II, D-I

The correct IUPAC name of [PtBr2(PMe3)2] is :

1. bis(trimethylphosphine)dibromoplatinum(II)
2. dibromodi(trimethylphosphine)platinum(II)
3. dibromobis(trimethylphosphine)platinum(II)
4. bis[bromo(trimethylphosphine)]platinum(II)

The correct order of ligands arranged in increasing field strength.

1. F- < Br- < I- < NH3
2. H2O < -OH < CN- < NH3
3. Br- < F- < H2O < NH3
4. Cl- < -OH < Br- < CN-

Which one of the following complexes will exhibit the least paramagnetic behaviour ? [Atomic number, Cr = 24, Mn = 25, Fe = 26, Co = 27]

1. [Fe(H2O)6]2+
2. [Mn(H2O)6]2+
3. [Co(H2O)6]2+
4. [Cr(H2O)6]2+

The number of complexes from the following with no electrons in the t2 orbital is . TiCl4, [MnO4]-, [FeO4]2-, [FeCl4]-, [CoCl4]2-

1. 4
2. 2
3. 3
4. 1

The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and M is metal) involves sp3 hybridization. The number of geometrical isomers exhibited by the complex is :

1. 0
2. 2
3. 3
4. 4

Number of complexes from the following with even number of unpaired "d" electrons is [V(H2O)6]3+, [Cr(H2O)6]2+, [Fe(H2O)6]3+, [Ni(H2O)6]3+, [Cu(H2O)6]2+ [Given atomic numbers: V = 23, Cr = 24, Fe = 26, Ni = 28, Cu = 29]

1. 1
2. 5
3. 2
4. 4

The correct sequence of ligands in the order of decreasing field strength is :

1. NCS- > EDTA4- > CN- > CO
2. CO > H2O > F- > S2-
3. S2- > -OH > EDTA4- > CO
4. -OH > F- > NH3 > CN-