Coordination Compounds

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-

If an iron (III) complex with the formula [Fe(NH3)x(CN)y]- has no electron in its eg orbital, then the value of x + y is

1. 6
2. 4
3. 3
4. 5

The number of unpaired d-electrons in [Co(H2O)6]3+ is .

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

Which of the following complex is homoleptic?

1. [Ni(NH3)2Cl2]
2. [Co(NH3)4Cl2]+
3. [Fe(NH3)4Cl2]+
4. [Ni(CN)4]2-

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect

[Co(NH3)6]3+ and [CoF6]3- are respectively known as :

1. Inner orbital Complex, Spin paired Complex
2. Spin paired Complex, Spin free Complex
3. Spin free Complex, Spin paired Complex
4. Outer orbital Complex, Inner orbital Complex

The correct statements from following are: Choose the correct answer from the options given below:

1. B, C only
2. B, D only
3. A, C only
4. A, D only

The 'Spin only' Magnetic moment for [Ni(NH3)6]2+ is 10-1 BM. (given = Atomic number of Ni : 28)

Select the option with correct property -

1. [Ni(CO)4] and [NiCl4]2- both Paramagnetic
2. [Ni(CO)4] and [NiCl4]2- both Diamagnetic
3. [NiCl4]2- Diamagnetic, [Ni(CO)4] Paramagnetic
4. [Ni(CO)4] Diamagnetic, [NiCl4]2- Paramagnetic