A transition Metal Mcan exist in two oxidation states +2 and +3.It forms an oxide whose experimentalformula is given by MxO where x < 1. Then the ratio of metal ions in +3 state to those in +2 state in oxide is given by :

(1) 1x1+x

(2) 1 + 2X

(3) 1 + x2

(4) 2(x1)3x2

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