In the form of dichromate, `Cr(VI)` is a strong oxidising agent in acidic medium but `Mo(VI)` in `MoO_(3)` and W(VI) and `WO_(3)` are not because______.
(i) Cr (VI) is more stable than Mo(VI) and W (VI). (ii) Mo (Yl) and W(VT) are more stable ll1an Cr(Vl). (ili) Higher oxidation states of heavier members of group-6 of transition series are more stable. (iv) Lower oxidation states of heavier members of group-6 of transition series are more stable.

Options

A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iv)
D. (ii) and (iv)

Answer

B