The d-and f-Block Elements / d तथा f ब्लॉक के तत्व
JEE Main & Advanced
Chemistry
The d-and f-Block Elements / d तथा f ब्लॉक के तत्व
Question Bank
Numerical Value Type Questions - Co-ordination Compound, d & f-block
question_answer
In alkaline \[{{H}_{2}}{{O}_{2}}\] , \[C{{r}_{2}}O_{7}^{2-}\] changes to tetraperoxo species \[Cr{{O}_{8}}^{-3}\] having oxidation number of Cr as?.