Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
Why is the electron gain enthalpy of O or F less than that of S or Cl?
Question Error Report
Question is incomplete/wrong
Question not belongs to this Chapter
Answer is wrong
Solution is wrong
Answer & Solution is not matching
Spelling mistake
Image missing
Website not working properly
Other (not listed above)
Error description
Thank you for reporting, we will resolve it shortly
Back to Question
Thank you for reporting, we will resolve it shortly
Q. Why is the electron gain enthalpy of $O$ or $F$ less than that of $S$ or $Cl$?
Classification of Elements and Periodicity in Properties
A
O and F are more electronegative than S and Cl.
11%
B
When an electron is added to O or F, it goes to a smaller $(n = 2)$ level and suffers more repulsion than the electron in S or Cl in larger level $(n = 3)$.
69%
C
Adding an electron to 3p-orbital leads to more repulsion than 2p-orbital.
13%
D
Electron gain enthalpy depends upon the electron affinity of the atom.
8%
Solution:
There is more repulsion for the incoming electron when the size of atom is smaller.