electron affinity

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RBergtraun_3A
Posts: 41
Joined: Wed Feb 20, 2019 12:15 am

electron affinity

Postby RBergtraun_3A » Sun Nov 17, 2019 10:36 pm

Are there trends for electron affinity on the periodic table?

Robert Cross 1A
Posts: 35
Joined: Wed Sep 11, 2019 12:15 am

Re: electron affinity

Postby Robert Cross 1A » Sun Nov 17, 2019 10:57 pm

Electron affinity increases as you go up and to the right of the periodic table

Chanel D_4E
Posts: 57
Joined: Wed Sep 11, 2019 12:17 am

Re: electron affinity

Postby Chanel D_4E » Sun Nov 17, 2019 11:00 pm

Electron affinity increases as you goes up a period and across a period (from left to right).
Attachments
Screen Shot 2019-11-17 at 10.59.02 PM.png

Angelo Mapalo 4E
Posts: 50
Joined: Sat Aug 24, 2019 12:18 am

Re: electron affinity

Postby Angelo Mapalo 4E » Sun Nov 17, 2019 11:16 pm

Electron affinity increase going to the right and upwards along the periodic table. It is the same trend as electronegativity. You can always look in the direction of Flourine since it's the element with the highest electronegativity.

Julie Park 1G
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Re: electron affinity

Postby Julie Park 1G » Sun Nov 17, 2019 11:19 pm

Electron affinity describes a neutral atom's likelihood of gaining an electron. Here are some explanations for why electron affinity increases as you go up a group and to the right side of the periodic table.

Down the group:
Electron affinity decreases. Increased shielding + greater distance between the nucleus and the shells of the electrons causes a decrease in attraction between an electron and the nucleus.

Across the table (left to right):
Electron affinity increases. The more valence e- there are, the more likely an atom is to gain e- (so a complete octet of electrons could be formed)

Tiffany Dong_4e
Posts: 51
Joined: Wed Sep 11, 2019 12:17 am

Re: electron affinity

Postby Tiffany Dong_4e » Sun Nov 17, 2019 11:22 pm

Electron affinity has a similar trend to electronegativity and ionization energy. (it increases going up and to the right)

alex_4l
Posts: 109
Joined: Thu Sep 26, 2019 12:18 am

Re: electron affinity

Postby alex_4l » Sun Nov 17, 2019 11:35 pm

electron affinity, ionization energy and electronegativity all follow the same trend of increasing upward and to the right, the only one that's different is size/radius which is downwards and to the left

RBergtraun_3A
Posts: 41
Joined: Wed Feb 20, 2019 12:15 am

Re: electron affinity

Postby RBergtraun_3A » Sun Dec 01, 2019 12:34 pm

Chanel D_4E wrote:Electron affinity increases as you goes up a period and across a period (from left to right).

Thats such a helpful image thank u so much


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