Which of the following statement is true?

Options

A. In `[PtCl_(2)(NH_(3))_(2)]^(2+)` the cis form is optically inactive while trans form is optically active
B. In `[Fe(C_(2)O_(4))_(3)]^(3-)`, geometrical isomerism does not exist while optical isomerism exists
C. In Mabcd, square planar complexes show both optical as well as geometrical isomerism
D. In Mabcd tetrahedral compoex, optical isomerism cannot be observed

Answer

C

Explanation

Above configuration is asymmetrical, hence optically active. Mabcd square planar exhibits geometricl isomerism Mabcd tetrahedral complex is optically active.