If possible can you explain how x Your answer is incorrect T

If possible can you explain how?

x Your answer is incorrect. Try again The molecules below are: CH3 CI Br H3 constitutional isomers. enantiomers diastereomers identical. None of these choices.

Solution

Diastereomers means that non superimposible non mirror images to each other and have more than one chiral carbon in their structures.

These two structures are identical since both are have R configuration.