Identify the primary valency of the central metal in the tetra coordinated `CuSO_4` and hexa coordinated `Cr(NO_3)_3. 6H_2O`

The primary valency of the central transition metal ion in a complex compound (Cr(NH_(3))_(4)Cl_(2)]Cl

The primary and secondary valencies of the central metal ion in the complex [Co(NH_(3))_(6)]Cl_(3) respectively are

Give the oxidation numbers of the central metal atoms in the following comlex entities [Fe(C_(2)O_(4))_(3)]^(3-)

Identify the ligands and central metal ion in [Co(NH_3)_2(en)_2]^(3+) ,Calculate the oxidation number and coordination number of metal ion.

What is the colour of CuSO_4* 5H_2O ?

Complex compounds are molecular compounds which retain their indentities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called coordination compounds because certain groups called ligands are attached to the central metal ion by coordinate or dative bonds. Coordination compounds exhibit isomerism, both structural and stereoisomerism. The struculre, magnetic property, colour and electrical properties of complexes are explained by various theories. Arrange the following compounds in order of of their molar conductance : i) K[Co(NO_(2))_(4)(NH_(3))_(2)] ii) [Cr(ONO)_(3)(NH_(3))_(3)] iii) [Cr(NO_(2))(NH_(3))_(5)]_(3)[Co(NO_(2))_(6)]_(2) iv) Mg[Cr(NO_(2))_(5)(NH_(3))]

The number of water molecules directly bonded to the metal centre is CuSO_4.5H_2O is