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Electronegativity vs. Electron Affinity

Posted: Wed Oct 30, 2019 9:14 pm
by Fiona Latifi 1A
Could someone please explain the conceptual difference between electronegativity and electron affinity? Thanks!

Re: Electronegativity vs. Electron Affinity

Posted: Wed Oct 30, 2019 9:26 pm
by Michelle Chan 1J
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.

Re: Electronegativity vs. Electron Affinity

Posted: Thu Oct 31, 2019 9:54 am
by Maeve Miller 1A
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.

Re: Electronegativity vs. Electron Affinity

Posted: Thu Oct 31, 2019 12:24 pm
by serenabirkhoff_1K
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.

Re: Electronegativity vs. Electron Affinity

Posted: Thu Oct 31, 2019 12:48 pm
by vanessas0123
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.

Re: Electronegativity vs. Electron Affinity

Posted: Thu Oct 31, 2019 11:41 pm
by Melvin Reputana 1L
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.

Re: Electronegativity vs. Electron Affinity

Posted: Fri Nov 01, 2019 12:16 am
by Minh Ngo 4G
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

Re: Electronegativity vs. Electron Affinity

Posted: Fri Nov 01, 2019 6:27 pm
by Alex Hitti 3E
Electronegativity is the tendency to gain an electron meanwhile electron affinity is the energy released when an electron is transferred to an anion