Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is yellow, and C is red. In the reactions in which they participate, they are reduced to A minus, B minus, and C minus ions, all of which are colorless. When a solution of C is mixed with one containing B minus ions, the color changes from red to yellow. When a solution of C is mixed with one containing A minus ions, the color remains red. Arrange A, B, and C in order of increasing activity. (1 is least active; 3 is most active) Hint: For X2 + 2 Y 1 minus Y2 + 2 X 1 minus ---> If a reaction occurs, X is more active than Y. If a reaction does not occur, Y is more active than X. В C A > > >

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