Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to:
A
High Ionisation enthalpy of fluorine
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B
Smaller size of chlorine atom
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C
Smaller size of fluorine atom
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D
Bigger size of 2p orbital of fluorine
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Solution
The correct option is C Smaller size of fluorine atom Due to smaller size and high repulsive force within the outermost orbit of fluorine, its electron gain enthalpy is less negative.