Ethylene diaminetetraacetate (EDTA) ion is:

1.	Bidentate ligand with two "N" donor atoms
2.	Tridentate ligand with three "N" donor atoms
3.	Hexadentate ligand with four "O" and two "N'' donor atoms
4.	Unidentate ligand

Match Column I with Column II, Columns I and II represent complexes and magnetic moment (BM) respectively. 

Choose the correct answer from the options given below:

The complex that will exhibit maximum ionic conductivity in aqueous solution is:

1. K₄[Fe(CN)₆]

2. [Co(NH₃)₆]Cl₃

3. [Cu(NH₃)₄]Cl₂

4. [Ni(CO)₄]

The incorrect option among the following is:

1. Ni(CO)₄, Tetrahedral, paramagnetic
2. [Ni(CN)₄]^2-, Square planar, diamagnetic
3. Ni(CO)₄, Tetrahedral, diamagnetic
4. [Ni(Cl)₄]2-, Tetrahedral, paramagnetic

The organometallic compound that is σ and $\mathrm{\pi }$ bonded is:

1. $\left[Fe{({\eta }^5-C_5{H}_5)}_2\right]$

2. $K\left[PtC{l}_3\right({\eta }^2-C_2{H}_4\left)\right]$

3. ${\left[Co{\left(CO\right)}_{5}N{H}_3\right]}^{+2}$

4. $Fe{\left(C{H}_3\right)}_3$

The coordination number of Ni in ${\left[\mathrm{Ni}\right({\mathrm{C}}_2{\mathrm{O}}_4{)}_3]}^{4-}$ is:

A metal ion present in vitamin B₁₂ is:

The octahedral complex that will not show geometrical isomerism is: 
 (A and B are monodentate ligands)

The number of unpaired electrons in the complex ion [CoF₆]^3– is:

(Atomic No. Co = 27)

1. 2

2. 3

3. 4

4. Zero

According to IUPAC nomenclature, sodium nitroprusside is named as:

1. Sodium nitro ferricyanide

2. Sodium nitro ferrocyanide

3. Sodium pentacyanidonitrosyl ferrate(II)

4. Sodium pentacyanonitrosyl ferrate(III)