Which of the followingg statement(s) is/are false?

Options

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

Answer

A, C, D

Explanation

`[PtCl_(2)(NH_(3))_(4)]^(2+)implies` both cis and trans forms are optically inacctive
(b)
`implies`Due to asymmetrical configuration, it exhibits optical isomerism.
(c)
`implies`Due to plane of symmetry does not exhibit optical isomerism, but exhibits geometrical isomerism.
(d)
`implies`Tetrahedral complex, asymmetric configuration, hence exhibits optical isomerism.