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Is there any coloured oxide of hitrogen ...

Is there any coloured oxide of hitrogen ?

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The known oxides of N are `N_(2)O`,NO,`NO_(2)`,`N_(2)O_(3)`,`N_(2)O_(3)`,`N_(2)O_(4)`,and `N_(2)O_(5)`.Amongs these `NO_(2)`is brown gas and `N_(2)O_(3)` is blue colour liquid
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