Electron Affinity

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Ariana Morales
Posts: 29
Joined: Fri Sep 28, 2018 12:15 am

Electron Affinity

Postby Ariana Morales » Sun Oct 28, 2018 4:34 pm

What steps are needed to be taken in order to solve this question?

1.F.11 Which element of each of the following pairs has higher electron affinity: a) tellurium or iodine and b) beryllium or magnesium?

Sara Lakamsani 4D
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Re: Electron Affinity

Postby Sara Lakamsani 4D » Sun Oct 28, 2018 5:20 pm

You need to take into account the trends of electron affinity based on the periodic table. So, electron affinity decreases as you go down a group, because electrons are farther away from the nucleus and there is increased shielding because electrons are at higher energy levels. It increases as you go left to right across a period because these elements have more valence electrons and are closer to reaching an octet. Knowing this, you need to compare the positions of each pair to see which one would have a higher electron affinity. Hope this helps!

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