IMAT 2016 Q52 [Oxidation States]

Five of the ions of vanadium are listed below:

  1. VO_3^–
  2. V^{3+}
  3. V^{2+}
  4. VO^{2+}
  5. VO_2^+

Which two ions have vanadium in the same oxidation state?

A. 2 and 5
B. 1 and 5
C. 3 and 4
D. 4 and 5
E. 1 and 3