MCQ
Identify the element which can have highest oxidation numbers
- A$N$
- B$O$
- ✓$Cl$
- D$C$
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$X + C{r_2}{O_3}\xrightarrow{\Delta }Y$ (Green coloured)
$X$ and $Y$ are
$(i)\, N_2 + 2O_2 \to 2NO_2\,\,\, \Delta H = 67.9\,kJ$
$(ii)\, N_2 + 2O_2 \to N_2O_4\,\,\, \Delta H = 9.3\,kJ$
......$kJ$