Electronegativity vs. Electron Affinity

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Fiona Latifi 1A
Posts: 92
Joined: Sat Sep 14, 2019 12:16 am

Electronegativity vs. Electron Affinity

Postby Fiona Latifi 1A » Wed Oct 30, 2019 9:14 pm

Could someone please explain the conceptual difference between electronegativity and electron affinity? Thanks!

Michelle Chan 1J
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

Re: Electronegativity vs. Electron Affinity

Postby Michelle Chan 1J » Wed Oct 30, 2019 9:26 pm

Electronegativity is how "greedy" atoms are for e-. So atoms with 7 valence e- are more electronegative than atoms with 8e-. Electron affinity is the amount of energy released when an electron is added to a neutral atom.

Maeve Miller 1A
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Joined: Fri Aug 09, 2019 12:16 am

Re: Electronegativity vs. Electron Affinity

Postby Maeve Miller 1A » Thu Oct 31, 2019 9:54 am

Electronegativity is the strength of the pull certain elements have on electrons--as the person above me said, how "greedy" they are. Electron affinity, however, is the energy released when an electron is added to a gas-phase atom. Both, however, follow the same trends on the periodic table--increasing across a period and decreasing down a group.

serenabirkhoff_1K
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Joined: Sat Aug 17, 2019 12:15 am

Re: Electronegativity vs. Electron Affinity

Postby serenabirkhoff_1K » Thu Oct 31, 2019 12:24 pm

To add to this:
Electronegativity is how well an atom can attract an electron to itself. This increases as you move right on the periodic table.
Electron affinity of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom. Electron affinity increases as you move right on the periodic table and decreases as you move down the periodic table.

vanessas0123
Posts: 83
Joined: Wed Sep 11, 2019 12:17 am

Re: Electronegativity vs. Electron Affinity

Postby vanessas0123 » Thu Oct 31, 2019 12:48 pm

Electronegativity is the tendency of an atom to attract a bonding pair of electrons, while electron affinity is the amount of energy released when an electron is added to a neutral atom.

Melvin Reputana 1L
Posts: 55
Joined: Sat Aug 17, 2019 12:16 am

Re: Electronegativity vs. Electron Affinity

Postby Melvin Reputana 1L » Thu Oct 31, 2019 11:41 pm

I would also like to add on that electronegativity is a calculated value based on the values of electron affinity and ionization energy which is why it has the same trends.

Minh Ngo 4G
Posts: 121
Joined: Thu Jul 25, 2019 12:17 am

Re: Electronegativity vs. Electron Affinity

Postby Minh Ngo 4G » Fri Nov 01, 2019 12:16 am

Electronegativity is the tendency of an atom to gain an electron from others while affinity is the amount of energy spent or released when an electron is added to form an anion

Alex Hitti 3E
Posts: 51
Joined: Sat Aug 17, 2019 12:17 am

Re: Electronegativity vs. Electron Affinity

Postby Alex Hitti 3E » Fri Nov 01, 2019 6:27 pm

Electronegativity is the tendency to gain an electron meanwhile electron affinity is the energy released when an electron is transferred to an anion


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