MCQ
Which molecules has zero dipole moment
- A${H_2}O$
- ✓$C{O_2}$
- C$HF$
- D$HBr$
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$4H_{(g)} \rightarrow 2H_{2(g)}$ is $-869.6\ kJ$
The dissociation energy of $H - H$ bond is ............ $\mathrm{kJ}$