Which of the following ions are optically active?

P)                                                                                  

 

 

 

                                                                                                          

Q) 

                                    

                                     

R)

S)

Optical isomers are mirror images that cannot be superimposed on each other. They are enantiomers, and the non-superimposable molecules or ions are referred to as chiral.

The compound that exhibits optical isomerism, i.e. the compound that is optically active, is as follows:

P and S are transformed and optically inactive.

So, option C is correct.