Which element has the most negative electron gain enthalpy? 

Monjur Alahi

Which element has the most negative electron gain enthalpy? 

(A) Sulphur

(B) Fluorine 

(C) Chlorine 

(D) Hydrogen


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Salim Ahmed Kawsar

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Correct option is : (C) Chlorine

In general the electron gain enthalpy (magnitude) increases along a period as we move from left to right and decreases as we move down in a group, but due to small size of 'F' it has less electron gain enthalpy than Cl

Hence, Cl has highest negative electron gain enthalpy

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Salim Ahmed Kawsar

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Correct option is (C) Chlorine

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