# The oxidation state of Cr in the complex $[Cr(NH_3)_4Cl_2]^+$ is

$(a)\;+3\qquad(b)\;+2\qquad(c)\;+1\qquad(d)\;0$

The oxidation state of Cr in the complex $[Cr(NH_3)_4Cl_2]^+$ is +3.
Hence (a) is the correct answer.