Question

In the form of dichromate, Cr (VI) is a strong oxidising agent in acidic medium but Mo (VI) in MoO₃ and W (VI) in WO₃ are not because.

(i) Cr (VI) is more stable than Mo(VI) and W (VI). 

(ii) Mo (VI) and W(VI) are more stable than Cr(VI). 

(iii) 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.

(a) (i) and (ii) 

(b) (ii) and (iii) 

(c) (i) and (iv) 

(d) (ii) and (iv

Answer 1

Correct option: (b) (ii) and (iii)