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JEE Advanced Chemistry question

ChemistryRedox ReactionsJEE Advanced

How many of the following have underlined atoms in different (non-uniform) oxidation states? , , , , ,

Answer: 4

Solution

and each contain only a single Hg or Cr atom, so the oxidation state is trivially uniform. Thiosulphate, , has two non-equivalent sulfurs (one "sulfate-like" central S, one "sulfide-like" terminal S) rather than both at the same formal state. Tetrathionate, , likewise has

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Question ID VK-159960