Electronegativity vs Electron Affinity

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Anne Tsai 1F
Posts: 50
Joined: Thu Jul 25, 2019 12:15 am

Electronegativity vs Electron Affinity

Postby Anne Tsai 1F » Sat Oct 26, 2019 2:21 pm

What is the difference between electronegativity and electron affinity, and do they differ in their periodic trends?

Naji Sarsam 1F
Posts: 104
Joined: Sat Aug 17, 2019 12:18 am

Re: Electronegativity vs Electron Affinity

Postby Naji Sarsam 1F » Sat Oct 26, 2019 2:36 pm

Electron affinity and electronegativity describe similar processes in different ways.

Electron affinity is the energy released when an atom--in the gaseous phase--gains an electron
This energy can be directly measured

Electronegativity is the "ability" of an atom to attract electrons
This is not a directly measurable property, rather a scale of electronegativities is used to relatively compare each atom to one another.

Evidently, both properties are similar and they have the same periodic trends. However, they are used in different contexts when just a relative comparison is needed (electronegativity) or exact energies are needed (electron affinity).

Sally Qiu 2E
Posts: 105
Joined: Fri Aug 30, 2019 12:18 am

Re: Electronegativity vs Electron Affinity

Postby Sally Qiu 2E » Sat Oct 26, 2019 2:48 pm

electronegativity is how well an atom can attract electrons, or basically an atom's ability to attract electrons. electron affinity is the amount of energy released when an electron is added to a neutral and gaseous atom

Kaitlyn Jang 1F
Posts: 45
Joined: Sat Aug 17, 2019 12:16 am

Re: Electronegativity vs Electron Affinity

Postby Kaitlyn Jang 1F » Sat Oct 26, 2019 5:21 pm

Electronegativity is the tendency of an atom to to attract electrons to itself, and it increases as you move left to right across a periodic table and decreases down a group. Electron affinity is mainly referring to the amount of energy released when an electron is added to an atom. Its periodic trends are the same as that of electronegativity.

MTanikella_1K
Posts: 110
Joined: Sat Jul 20, 2019 12:16 am

Re: Electronegativity vs Electron Affinity

Postby MTanikella_1K » Sun Oct 27, 2019 4:33 pm

Electronegativity is a property of an atom that isn't necessarily measurable while electron affinity is a value that can be measured. Both properties have the same periodic trend.

AmyL_3L
Posts: 50
Joined: Fri Aug 09, 2019 12:17 am

Re: Electronegativity vs Electron Affinity

Postby AmyL_3L » Sun Oct 27, 2019 5:13 pm

Like the responses above, electronegativity is the atom's likeliness of attracting an electron, whereas electron affinity is the amount of energy that is released when an atom gains an electron. On the periodic table, their trends are both the same: they increase across a period from left to right and from bottom to top in a group.

Lauren Tanaka 1A
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

Re: Electronegativity vs Electron Affinity

Postby Lauren Tanaka 1A » Tue Oct 29, 2019 2:22 pm

Electronegativity is the ability of atoms to attract electrons and it increases across the period and decreases down a group. Electron affinity is the energy released when electrons are added to a gaseous atom it also has the same trend as electronegativity on the periodic table.


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