P-Block Elements Ques 634
Question: Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to:
Options:
A) High ionization enthalpy of fluorine
B) Smaller size of chlorine atom
C) Smaller size of fluorine atom
D) Bigger size of 2p orbital of fluorine
Show Answer
Answer:
Correct Answer: C
Solution:
The electron gain enthalpy order for halogens is $ Cl>F>Br>I $ Due to small size of fluorine the extra electron to be added feels more electron- electron repulsion. Therefore fluorine has less value for electron affinity than chlorine.
