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Shreyasi majumdar 1
Correct option is d. Here Pt4+ preferentially interacts with O according to HSAB principle. So, intramolecular rearrangement would not be prefered
but the answer is c
The reason is correct (hsab). Pt4+ is soft. All 4d and 5d metal ions are infact soft. So, we will consider option a and c, out of which Cr3+ is hard and interacts with O (hard). So, correct option is c