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Difference in the change in oxidation states of transition elements and p-block elements

In d block, variable valency occurs due to small differences in successive ionization enthalpy. Hence, it shows valency with difference of 1 While in p block, variable valency occurs due to inert pair ...
Shaurya Gupta's user avatar
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Why does balancing the oxidation of dichromate(VI) to chromium(III) require six iron atoms?

I would like to go back to your original demand. On the first line, there was a title : "The problem". The second line is : "Balance the chemical equation using oxidation numbers". ...
Maurice's user avatar
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Why does balancing the reduction of dichromate(VI) to chromium(III) require four water molecules among the products?

$$\ce{Cr2O7^2–(aq) + 3 HNO2(aq) + 5 H+(aq) -> 2 Cr^3+(aq) + 3 NO3–(aq) + 4 H2O} $$ The left side has $1\cdot7 + 3\cdot2 = 13$ oxygen atoms and $3\cdot1 + 5\cdot1 = 8$ hydrogen atoms. The right side ...
Karsten's user avatar
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