Which of the following statement(s) is/are incorrect?

Options

A. In `[CoBrCl(en)_(2)]^(+)` geometrical isomerism exists, while optical isomerism does not exist
B. IUPAC name of `K_(2)[Cr(CN)_(2)O_(2)(O_(2))(H_(2)O)]` is Potassium aquadicyanosuperoxo peroxo chromate(III)
C. There are 3 geometrical and 15 stereoisomers possible for `[Pt(NO_(2))(NH_(3))(NH_(2)OH)(py)]^(+)and[PtBrClI(NO_(2))(NH_(3))(py)]` respectively
D. cis and transforms are not diastereomers to each other.

Answer

A, B, C, D

Explanation

Its cis isomer is optically active.
b) Sequence is .peroxo superoxo..
c) Sequence planar [M a b c d] will have 3 geometrical isomers octahedral [Mabc d e f] will have 15 geometrical isomers, each one being chiral.
d) Non-mirror images are diastereomers.