Question

i) Cr2O7-2 is a strong oxidising agent in acidic medium whereas WO3 and MoO3 are not. Give reason​

Answer 1

1.The oxidation state ofCr, Mo and W is +6 each. As we move down from Cr, Mo to W, the higher oxidation states are more stable for heavier elements.
2.Higher oxidation states of heavier members of group-6 of transition series are more stable.Higher oxidation states of heavier members of group-6 of transition series are more stable.

Answer 2

1.Cr, Mo, and W all have an oxidation state of +6. Higher oxidation states are more stable for heavier elements as we move down from Cr, Mo, and W.

2.Heavier members of group-6 of the transition series have more stable oxidation states.

The heavier members of group-6 in the transition series have more stable oxidation states.