Question

The oxidation number , d-orbital occupation and co-ordination number of cr in the complex
Cis-`[Cr(en)_(2)Cl_(2)]Cl` are respectively .
A. `+3,ed` and 4
B. `+3,4d` and 6
C. `+3,3d` and 6
D. `+2`, 3d and 6

Answer 1

Correct Answer - C
Oxidation state of `Cr= x+2(-1) = +1implies x= +3`.
`Cr^(3+)` occupies 3d orbitals and its coordination number in the given complex is 6.