The oxidation number of cobalt in the given coordination complex is:[Co(H2NCH2CH2NH2)3]2(SO4)3
Correct answer: A. III
- A. III
- B. II
- C. IV
- D. VI
Explanation
In the given complex, [Co(H2NCH2CH2NH2)3]2(SO4)3 Cobalt is bonded with three molecules of ethylenediamine which is a bidendate ligand having neutral charge. Moreover the coordination sphere is bonded with three molecules of sulphate ions each having -2 charge. Using formula: Charge of Metal + Charge on Ligand + Charge on coordination sphere 2(x + 3(0) ) = 3(-2) 2x = -6 x = -3
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