Define 'EAN'. Calculate the EAN of the following central metal ions in their respective complexes :
(i) `[Cu(NH_(3))_(4)] (OH)_(2)`
(ii) `[Co(H_(2)O)_(6)] (NO_(3))_(3)`
(iii) `K_(4)[Fe(CN)_(6)]`

Define EAN. Calculate the EAN of the following metals in their respective complexes: [Cu(NH_3)_4](OH)_2 and K_4[Fe(CN)_6]

The complex ion [Cu(NH_(3))_(4)]^(2+) has :

Give the oxidation numbers of the central metal atoms in the following comlex entities [Co(NH_(3))_(6)]^(3+)

Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H_(2)O)_(6)]^(3+) (ii) [Fe(H_(2)O)_(6)]^(2+) (iii) [Zn(H_(2)O)_(6)]^(2+)

Which of the following statement is true about the complex [CrCl_(3)(OH)_(2)(NH_(3))]^(2-) ion?

Which of the following statement is true about the complex [CrCl_(3)(OH)_(2)(NH_(3))]^(-2) ion ?

Stable complex based on EAN rule (i) K_(4)[Fe(CN)_(6)] (ii) [Co(NH‌‌_(3))_(5)Cl]Cl_(2) (iii) [Ni(CO)_(4)] (iv) K_(3)(Ni(CN)_(4)]

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

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