MCQ
Which of the following has standard enthalpy of formation is equal to zero
- A$Hg\,(s)$
- B$Xe\,(s)$
- ✓$Br_2\,(l)$
- D$S_{monoclinic}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
(Round off to the Nearest Integer).
[Neglect volume change on adding $HA$. Assume degree of dissociation $<< 1]$