Indicate the type of isomerism exhibited by the following complexes and draw the structures for these isomers.`K[Cr(H_2O)_2(C_2O_4)_2]`

Explanation

(i) Both geomẹtrical (cis-, trans-) and optical isomers for cis can exist.
Figure
(ii) Two optical isomers can exist.,
(iii) .The .. Hint:
There are geometrical, ionisation and lịnkage isomers possible.) Linkage Isomers, .[CO(NH_3)_3 ONO](NO_3)_2^prime . and
.:[CO(N H_3)_5, NO_2](NO_3)_2.
(iv) Geometrical (cis-, trans-) isomers can exist.