Question
- Define electron gain enthalpy.
- Give the resonance structure of $O_3$.
- Give reason:
- $He_2$ molecule is not formed.
- Ethyl alcohol dissolves in $H_2O$
- HF is polar though it possesses covalent bond.
✓
Answer
- It is defined as energy released when one mole of neutral gaseous atom gains one electron.
- Because its bond order is zero.
- Ethyl alcohol can form hydrogen bond with water.
- It is due to difference in electronegativity between H and F.
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