In the test for nitrate ion, the brown ring formed has a formula [Fe(H2O)5NO]SO4 . The oxidation number of iron in this complex is
(A) + 1 (B) + 2 (C) + 3 (D) 0.
Correct option (A) + 1
Explanation:
O.N. of Fe is + 1 : x + 5(0) + 0 = + 2 or x = + 1.
