Electron Affinity

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Jerome Mercado 2J
Posts: 60
Joined: Tue Nov 28, 2017 3:02 am

Electron Affinity

Postby Jerome Mercado 2J » Wed Oct 24, 2018 1:43 pm

Just making sure: Is electron affinity the same as electronegativity? I know in Biology calls an ability to attract electrons with electronegativity. If they are different I do no want to mix them up.

MaanasO 1A
Posts: 72
Joined: Fri Sep 28, 2018 12:26 am

Re: Electron Affinity

Postby MaanasO 1A » Wed Oct 24, 2018 1:46 pm

Hi Jerome!

They are similar. Electronegativity refers to how well an atom can attract an electron. Electron affinity is the actual amount of energy released when an atom gains an electron. They are similar ideas, but they aren't the exact same thing.

Hope that helps!

Olivia Young 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

Re: Electron Affinity

Postby Olivia Young 1A » Wed Oct 24, 2018 2:07 pm

Electron affinity and electronegativity are different, but they have a very similar trend across the periodic table. Electron affinity refers to the energy released when electrons are added to a gas phase atom, while electronegativity describes the the ability of an atom to attract a pair of bonded electrons. Because both electron affinity and electronegativity are similar concepts, they have very similar trends such that they increase across a period and decrease down a group. So far, Dr. Lavelle hasn't really focused on electronegativity, mostly just ionization energy and electron affinity.

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