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.
Solution:
Option (ii) and (iii) are the answers.
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