MCQ
The elements $X,\,Y$ and $Z$ forms oxides which are acidic, basic and amphoteric respectively, then correct order of their electronegativities is
- A$X > Y > Z$
- B$Z > Y > X$
- ✓$X > Z > Y$
- D$Y > X > Z$
hence $EN$ of $X$ is maximum
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$(i)\, N_2 + 2O_2 \to 2NO_2\,\,\, \Delta H = 67.9\,kJ$
$(ii)\, N_2 + 2O_2 \to N_2O_4\,\,\, \Delta H = 9.3\,kJ$
......$kJ$