How to compare the electronic affinity between two atoms

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Junxi Feng 3B
Posts: 52
Joined: Sat Sep 14, 2019 12:17 am

How to compare the electronic affinity between two atoms

Postby Junxi Feng 3B » Sat Nov 02, 2019 5:02 pm

Can someone explain a general way to do so? I see lots of exceptions in electronic affinity.
Also, can someone answer this question?
Which has a higher electron affinity, chlorine (Cl) or Neon (Ne)

Thanks!

Ethan Lam 4A
Posts: 69
Joined: Thu Jul 11, 2019 12:17 am

Re: How to compare the electronic affinity between two atoms

Postby Ethan Lam 4A » Sat Nov 02, 2019 5:05 pm

Chlorine has a higher electron affinity because it does not have a full orbital like neon does. You can compare electron negativity since it increases from left to right and up the group. The noble gasses have a low electron affinity since they have 8 valence electrons already.

Pablo 1K
Posts: 118
Joined: Sat Feb 02, 2019 12:15 am

Re: How to compare the electronic affinity between two atoms

Postby Pablo 1K » Sat Nov 02, 2019 5:17 pm

Electronegativity always in creased going left to right and down to up. Applies to elements without a full valence shell so CL is much more electronegative.


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