Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

I have found that as we go down the group 18(noble gases), the electron gain enthalpies of the elements become less and less positive in general. But i think they should be more and more positive since this is the general trend in the periodic table. Can you please help me sort out this confusion?

Asked by kumar.ashlesha 25th June 2016, 8:03 PM
Answered by Expert
Answer:

Noble gases have large positive electron gain enthalpy because electron has to enter next higher principle quantum level leading to a very unstable electronic configuration.

The electron gain enthalpy decreases down a group as increase in the size of the atom and also the added electron would be further away from the nucleus.
Answered by Expert 4th July 2016, 6:15 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!