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Electron affinity trend
Posted: Sun Oct 28, 2018 7:19 pm
by Samantha Hoegl Roy 2C
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.
Re: Electron affinity trend
Posted: Sun Oct 28, 2018 7:28 pm
by Alma Carrera 3C
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.
Re: Electron affinity trend
Posted: Sun Oct 28, 2018 8:09 pm
by Faith Fredlund 1H
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.