1.

In the form of dichromate, Cr(VI) is a strong oxidising agent in acidic medium but Mo(VI) in MoO_(3) and W(VI) in WO_(3) are not because -

Answer»

Cr(VI) is more stable than Mo(VI) and W(VI).
Mo(VI) and W(VI) are more stable than Cr(VI).
HIGHER oxidation STATES of heavier members of gr. - 6 transition series are more stable.

Solution :Higher oxidation states of heavier members of transition elements BELONGING to the same GROUP are more stable.


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