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 group -6 of transition series are more stable
Lower oxidation states of heavier members of group -6 of transition series are more stable

Solution :Cr(VI) in acidic medium act as a good OXIDIZING agent because of higher STABILITY of chromium in lower oxidation state to which it is reduced. i.e., `d^(3)` CONFIGURATION


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