Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species:- 1. F < Cl < O < S 2. S < O < Cl < F 3. O < S < F < Cl 4. Cl < F < S < O

 

  Question:  From NCERT  | NEET    || [Difficult level:Easy]  || 

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species:-

1.  F < Cl < O < S

2.  S < O < Cl < F

3.  O < S < F < Cl

4.   Cl < F < S < O_

:4.   Cl < F < S < O ..

......

NCERT REFERENCE

electron gain enthalpy of O or F is less negative than that of the succeeding element. This is because when an electron is added to O or F, the added electron goes to the smaller n = 2 quantum level and suffers significant repulsion from the other electrons present in this level. For the n = 3 quantum level (S or Cl), the added electron occupies a larger region of space and the electron-electron repulsion is much less.____________________

SUB-TOPIC:

• 3.7.1 Trends in Physical Properties
• (d) Electron Gain Enthalpy

Click the NCERT Lines above to go to NCERT EBook Section 

or 

Click to content menu to go to particular subtopic as mentioned above (If not redirected automatically)

...

✅