MCQ
The state of hybridisation of central atom in dimer of $BH_3$ and $BeH_2$ is
- A$sp^2 , sp^2$
- ✓$sp^3 , sp^2$
- C$sp^3 , sp^3$
- D$sp^2 , sp^3$

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$S{O_2} + \frac{1}{2}{O_2} \to S{O_3} + y\,kcal$
Find out the heat of formation of $S{O_2}$
