1. Bromite   BrO2   IO   IO4   ClO3   Hint Half-n-half Clue   2. Dichromate (Cr2O7)   IO3   IO4   BrO3   Cr2O7   Half-n-half Clue   3. Bromate   IO4   CNO   ClO3   BrO3   Half-n-half Clue   4. Phosphite   MnO4   IO4   NO2   PO3   Half-n-half Clue   5. Perbromate   BrO4   MnO4   BrO3   C2O4   Half-n-half Clue   6. Iodite   PO3   ClO4   IO2   CN   Half-n-half Clue   7. Hypochlorite   C2H3O2   ClO   CNO   IO   Half-n-half Clue