The number of possible isomers for the complex [Co(C₂O₄)₂(NH₃)₂] is 

The primary and secondary valencies of chromium in the complex ion, dichlorodioxalatochromium (III) are respectively

Prussian blue is obtained by mixing together aqueous solution of Fe³⁺ salt with 

Oxidation number and coordination number of silver in Tollen's reagent respectively are

[Co(NH₃)₄(NO₂)₂]Cl exhibits

The complex which has the highest magnetic moment among the following is

Consider the following complexes:
1. Fe(CO)₅ 
2. Ni(CO)₄
3. K₄[Fe(CN)₆]
4. Na₃[Cu(SCN)₄]
Which of the above complexes obey EAN rule?

Which of the following complexes formed by Cu²⁺ ions is most stable

Which of the following complexes show linkage isomerism ?

Write IUPAC name of K₃[Fe(C₂O₄)₃].

The number of coordinate bonds formed by the ligands with the central metal atom is called its ..................

Draw the structure of isomers of \([Pt(NH_3)_2Cl_2]\)

Give names of two complexes which are used in medicines.

Write down the heterogeneous catalyst involved in the polymerisation of ethylene.

Name the following coordination compounds and draw their structures:
(i) [CoCl₂(en)₂]Cl
(ii) [Pt(NH₃)₂CI(NO₂)]
(At no. Co = 27, Pt = 78)

\(Fe^{ 2+ }\overset { SCN^{ - } }{ \underset { { excess } }{ \rightarrow } } (A)\overset { { F }^{ - } }{ \underset { excess }{ \rightarrow } } (B)\)
What are (A) and (B)? Give IUPAC name of (A). Find the spin only magnetic moment of (B).

Explain the bonding in coordination compounds in terms of Werner's postulates.

Explain why [Fe(H₂O)₆]³⁺ has magnetic moment value of 52.92 BM wher as [Fe(CN)₆]^3- has a value of only 1.74 BM.

What is the relationship between observaed colour of the complex and the wavelength of light absorbed by the complex?

Compare the following complexes with respect to their molecular shape and mahnetic behaviour:
(i) [Cr(NH₃)₆]³⁺
(ii) [Fe(CN)₆]^4-
(iii) [NiCl₄]^2-
(At. No:Cr = 24, Fe = 26, Ni = 28)

Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:
(a) [Fe(CN)₆]^4- 
(b) [FeF₆]^3- 
(c) [Co(C₂O₄)₃]^3-
(d) [CoF₆]^3-

Write the name, the structure and the magnetic behaviour of each one of the following
complexes:
(i) [Pt(NH₃)₂Cl(NO₂)]
(ii) [Co(NH₃)₄Cl₂]CI
(iii) [Ni(NH₃)NO₃] Cl
(At nos. Co = 27, Ni = 28, Pt = 78)

(i) Write the IUPAC name of the complex [Cr(NH₃)₄Cl₂]Cl.
(ii) What type of isomerism is exhibited by the complex [Co(en)₃]₃₊? (en = ethane-1, 2-diamrnine)
(iii) Why is [NiCl₄]^2- paramagnetic but [Ni(CO)₄] is diamagnetic? (At. nos, : Cr = 24, Co = 27, Ni = 28)

Using valence bond theory explain the geometry and magnetic behaviour by [Cr(NH₃)₆]³⁺  (At.no.Cr = 24)
Write the IUPAC name of ionization isomer of [Ni(NH₃)₆]⁶⁺

Using crystal field theory, draw energy level diagram, write electronic configuration of the central metal atom/ion and determine the magnetic moment value in the following :
(i) \([CoF_6]^{3-}, [Co(H_2O)_6]^{2+},[Co(CN)_6]^{3-}\) 
(ii) \([FeF_6]^{3-}, \ [Fe(H_2O)_6]^{2+}, [Fe(CN)_6]^{4-}\).

Co-ordination compounds have an important role in the field of medicines. Out of these, the compound cis-platin is quite effective against cancer. It inhibits the growth of tumors leading to cancer.
(i) What is the chemical formula and name of the complex?
(ii) How does it behave as an anti cancer agent?
(iii) Why is trans-isomer not effective?
(iv) What is the value associated with the use of cis platin?