Electron affinity trend

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Samantha Hoegl Roy 2C
Posts: 81
Joined: Fri Sep 28, 2018 12:15 am

Electron affinity trend

Postby Samantha Hoegl Roy 2C » Sun Oct 28, 2018 7:19 pm

Hi! I am a little bit confused why Helium has the highest electron affinity. And what does the number stand for (He <0)? The trend is also not clear to me as there is no pattern.

Alma Carrera 3C
Posts: 33
Joined: Fri Apr 06, 2018 11:02 am

Re: Electron affinity trend

Postby Alma Carrera 3C » Sun Oct 28, 2018 7:28 pm

In lecture, Dr. Lavelle said that there is generally high electron affinity for elements in the top right of the periodic table. This is why Helium has the highest electron affinity.

Faith Fredlund 1H
Posts: 68
Joined: Fri Sep 28, 2018 12:18 am

Re: Electron affinity trend

Postby Faith Fredlund 1H » Sun Oct 28, 2018 8:09 pm

As Dr. Lavelle implied in class, electron affinity increases across each period (row) and decreases down each column. Because He is at the top right corner (the furthest right and the highest in its column) , it has the highest electron affinity.


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