Fluorine is most electronegative element of periodic table but its electron gain enthalpy is less than that of chlorine. Explain.
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Answer:
Because fluorine is a very small atom in comparison with chlorine , when fluorine gains a electron , the electronic repulsion between the electrons increases which decreases the electron gain enthalpy in comparison with chlorine .
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Answer:
Due to variation in atomic radii
Explanation:
Fluorine has a van der Waal radius of about 147pm whereas Chlorine has a van der Waal radius of 177pm. Due to smaller size, the repulsions between the electrons of Fluorine is greater than that of Chlorine thus reducing its ∆egH.
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