Question

For the complex [Fe(en)2Cl2]Cl, (en = ethylenediamine), identify (i) the oxidation number of iron.

Answer 1

For complex [Fe(en)2Cl2]Cl

Oxidation number of ethylene diamine is 0

Oxidation number of chlorine is -1

Now, oxidation number of iron can be determined as:

X + 2 (-1) + (-1) = 0

X = 3

Hence, oxidation number of iron is +3