In which of the following compounds, an element exhibits two different

1.	In which of the following compounds, an element exhibits two different oxidation states ?
Answer» `NH_(4)OH` `NH_(4)NO_(3)` `N_(2)H_(4)` `N_(3)H` Solution :`NH_(4)NO_(3)toNH_(4)^(+)+NO_(3)^(-)` OXIDATION NUMBER in `NH_(4)^(+)` is -3. Oxidation number in `NO_(3)^(-)` is +5.

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