Electronegativity vs. Electron affinity

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Andrea_1H
Posts: 50
Joined: Wed Sep 18, 2019 12:18 am

Electronegativity vs. Electron affinity

Postby Andrea_1H » Sun Oct 27, 2019 8:40 pm

Is there a difference between electronegativity and electron affinity?

Abigail_Hagen2G
Posts: 107
Joined: Fri Aug 09, 2019 12:17 am

Re: Electronegativity vs. Electron affinity

Postby Abigail_Hagen2G » Sun Oct 27, 2019 8:43 pm

Yes, electron negativity is the ability to attract paired electrons, while electron affinity is the energy used when an electron is added.

TanveerDhaliwal3G
Posts: 105
Joined: Fri Aug 30, 2019 12:17 am

Re: Electronegativity vs. Electron affinity

Postby TanveerDhaliwal3G » Sun Oct 27, 2019 8:45 pm

Electronegativity is the tendency of an atom to attract a bonding pair of electrons while electron affinity is the energy required/released when an electron attaches to an atom(measured in eV).

Hannah Pham
Posts: 104
Joined: Fri Aug 09, 2019 12:17 am

Re: Electronegativity vs. Electron affinity

Postby Hannah Pham » Sun Oct 27, 2019 8:45 pm

The difference is that electronegativity is the ability of an atom to attract electrons towards itself while electron affinity is the amount of energy released when an atom gains an electron.

JOtomo1F
Posts: 66
Joined: Sat Aug 24, 2019 12:16 am

Re: Electronegativity vs. Electron affinity

Postby JOtomo1F » Mon Oct 28, 2019 12:42 am

Do these two terms have the same trends across the periodic table?

Ethan Low 1L
Posts: 24
Joined: Wed Sep 18, 2019 12:15 am

Re: Electronegativity vs. Electron affinity

Postby Ethan Low 1L » Mon Oct 28, 2019 12:43 am

Electronegativity is the ability of an atom to attract electrons towards itself whereas electron affinity is the amount of energy released when an atom gains an electron.

Megan_1F
Posts: 49
Joined: Thu Jul 25, 2019 12:16 am

Re: Electronegativity vs. Electron affinity

Postby Megan_1F » Mon Oct 28, 2019 10:06 am

I tend to associate electronegativity with covalent bonding and electron affinity with ionic bonding. Both have the same trends in the periodic table.

Victoria Li 1L
Posts: 51
Joined: Sat Jul 20, 2019 12:15 am

Re: Electronegativity vs. Electron affinity

Postby Victoria Li 1L » Mon Oct 28, 2019 10:57 am

There's a post from last year on the same topic: https://lavelle.chem.ucla.edu/forum/viewtopic.php?t=35085

I think it has to do more with whether the atoms in question are bonded or not. However, they do have the same trend (increasing across, decreasing down).

005162902
Posts: 102
Joined: Wed Sep 18, 2019 12:15 am

Re: Electronegativity vs. Electron affinity

Postby 005162902 » Mon Oct 28, 2019 12:05 pm

They are very different. Electron affinity is the energy released when an atom gains an electron. Electronegativity is the atom's tendency to attract a electrons from other elements and is based on the elements location on the periodic table.


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