Question

What is the oxidation state of the metal ion in the following?
(i) [MnCl6]4-
(ii) [Fe(CN)6]3-
(iii) [Cr(NH3)6]3+
(iv) [Ni(en)3]2+

Answer 1

Answer:

1.2+

2.3+

3.3+..as nh3 is a molecule so its oxd st will be 0

4.5 +

Answer 2

Answer:=+2

Explanation: The charge on the (en) is 0. this means the oxidation number is the charge on the complex.