Coordination Compound Questions

Magnetic moments of Cr (Z = 24), Mn+ (Z = 25) and Fe2+ (Z = 26) are x, y and z respectively. Which of the following is correct ?

Magnetic moment of [Ni(CN)4]2− is zero but that of [Ni(H2O)4]2+ is 2.83 B.M. It is because of –

Increasing value of magnetic moments of – (I) [Fe(CN)6]4− (II) [Fe(CN)6]3− (III) [Cr(NH3)6]3+ (IV) [Ni(H2O)4]2+ is –

Which among the following ions has maximum value of magnetic moment –

In 3d series, the maximum magnetic moment is shown by –

Which of the following is a π-acid ligand –

The most probable formula of prussian blue is –

Which statement is wrong –

Three arrangements are shown for the complex, [Co(en)(NH3)2Br2]+. Which one is the wrong statement –

From the stability constant (hypothetical values) given below, predict which is the strongest ligand –

Which one of the following is expected to exhibit optical isomerism [en = ethylenediamine] –

Which of the following complex is an outer orbital complex –

What is the magnetic moment of K3[FeF6] –

Co-ordination isomerism is caused interchange of ligand between the –

Extraction of metals of other processes is through the complex formation – I : cyanide process II : Mond's process III : Photographic fixing process Complexes formed in these methods are –

When the d-orbitals involved in the hybridisation are inner (n−1) d-orbitals, the complex formed are referred to as –

How many geometrical isomers are possible for the square-planar complex [Pt(NO2)(py)(NH3)(NH2OH)] NO2 –

Which of the following statements is correct –

The IUPAC name for [(NH3)5Cr–OH–Cr(NH3)5]5+ is –

Which of the following is a high-spin complex–

The complex salt having the molecular composition [Co(NO2)(SCN)(en)2] Br exhibits-

Which of the following complex has highest stability at 298 K –

In which pair of complex entities given below the EAN of metal atom/ion is same –

Which one of the following statements is incorrect –

How many isomer are theoretically possible for the formula [Pt(py)(NH3)(NO2)Cl Br I] –

The correct order for the wavelength of absorption in the visible region is –

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

Which statement is incorrect –

Aqueous solution of Ni2+ contains [Ni(H2O)6]2+ and its magnetic moment is 2.83 BM. When ammonia is added in it, comment on the magnetic moment of solution –

In metal carbonyls, there is –

The stability constant of the complexes formed by a metal ion (M2+) with NH3, CN−, H2O and en are of the order 10^11, 10^27, 10^15 and 10^8 respectively. Then –

Which of the following has highest magnetic moment –

How many H-bonds are present in the complex entity formed by Ni2+ and dmg ligands –

Name the metal M which is extracted on the basis of following reactions – 4M + 8CN− + 2H2O + O2 → 4[M(CN)2]− + 4OH− 2[M(CN)2]− + Zn → [Zn(CN)4]2− + 2M

A reagent used for identifying nickel ion is –

In electroplating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is –

Match List I with List II and select the correct answer using the codes given below the lists – List I (1) Muscle contraction (2) Blue-green algae (3) Carboxypeptidase (4) Cyanocobalamine List II i. Zinc ii. Cobalt iii. Calcium iv. Molybdenum Code :

In which of following pairs of species the number of unpaired electrons are same –

Among the complex ions given below which is/are outer-orbital complex – [Co(CN)6]4− [Fe(H2O)6]2+ [FeF6]3− [CoF6]3− I II III IV

Which of the following complexes are paramagnetic in nature – [Fe(CN)6]3− [Fe(CN)6]4− [CoF6]3− Ni(CO)4 I II III IV

In nitroprusside ion the iron and NO exist as FeII and NO+ rather than FeIII and NO. These forms can be differentiated by –

The species having tetrahedral shape is –

Match List-I with List-II and select the correct answer using codes given below the lists – List-I Metal ions (1) Cr3+ (2) Fe2+ (3) Ni2+ (4) Mn2+ List-II Magnetic moment(B.M.) i. √35 ii. √30 iii. √24 iv. √15 v. √8 code : (1) (2) (3) (4)

The complex diaquatrammine chlorocobalt (III) chloride is represented as –

The secondary valency of copper in cuprammonium ion is –

The formula of potassiumdicyano bis (oxalato) nickelate (II) is –

The isomer Can be marked as –

The formula of sodium nitroprusside is –

Correct formula of diammine silver (I) chloride is –

Match List I with List II and Select the correct answer using the codes given below the lists – List-1 Complex ions a. [Fe(CN)₆]⁴⁻ b. [Fe(CN)₆]³⁻ c. [Cr(H₂O)₆]³⁺ d. [Ni(H₂O)₆]²⁺ e. [FeF₆]³⁻ List-2 Magnetic Moment in Bohr Magnetons 1. 1.73 2. 5.93 3.