The electron gain enthalpy (with negative sign) of fluorine is less than that of chlorine due to:
- AHigh ionization enthalpy of fluorine
- BSmaller size of chlorine atom
- CSmaller size of fluorine atom
- DBigger size of $2p$ orbital of fluorine
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In which of the following processes is energy liberated?
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$(i)$ $O$ or $F$ $(ii)$ $F$ or $Cl$
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