Agree: The Cr in CrO4 (2-) is double bonded to two oxygen atoms and single bonded to two others, which each have a negative charge. This explains the net -2 charge as indicated in suggestion
Agree: The Cr in CrO4 (2-) is double bonded to two oxygen atoms and single bonded to two others, which each have a negative charge. This explains the net -2 charge as indicated in suggestion