MCQ
The type of molecular forces of attaction present in the following compound is


- AIntermolecular $H-$ bonding
- BIntramolecular $H-$ bonding
- Cvan der Waals' force
- ✓all of these


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| Reaction | Energy Change (in $kJ$ ) |
| $Li(s) \to Li(g)$ | $161$ |
| $Li(g) \to Li^+(g)$ | $520$ |
| $\frac {1}{2}F_2(g)\,\to F(g)$ | $77$ |
| $F(g) + e^- \to F^-(g)$ | (Electron gain enthalpy) |
| $Li^+ (g) + F^-(g) \to LiF(s)$ | $-1047$ |
| $Li (s) + \frac {1}{2}F_2(g)\to LiF(s)$ | $-617$ |
Based on data provided, the value of electron gain enthalpy of fluorine would be.....$kJ\,mol^{-1}$
