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In the complex [M (en)2 (Ox)] Cl For the central metal ion M3+
The primary valance is = +3
The secondary valance = 6
sum of primary valance and secondary valance = 3+6 = 9
The complex is [M(H2O)5 Cl] Cl2
1000 ml of 1M solution of the complex gives 2 moles of Cl− ions
1000 ml of 0.01M solution of the complex will give
[100 ml x 0.01M x 2Cl-] / [1000 ml x 1M] = 0.002 moles of C− ions
Molecular formula: MSO4Cl. 6H2O .
Formation of white precipitate with Barium chloride indicates that SO42- ions are outside the coordination sphere, and no precipitate with AgNO3 solution indicates that the Cl− ions are inside the coordination sphere.Since the coordination number of M is 6, Cl− and 5 H2O are ligands, remaining 1 H2O molecular and SO42- are in the outer coordination sphere.
The electronic configuration t2g3, eg2
[3x(-0.4) + 2(0.6)]Δ0
[-1.2 + 1.2]Δ0 =0