Electronegativity and electron affinity

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Kristina Nguyen 1C
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Joined: Thu Jul 27, 2017 3:00 am

Electronegativity and electron affinity

Postby Kristina Nguyen 1C » Sun Nov 12, 2017 12:09 pm

What is the difference the two?

Emma Boyles 1L
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Re: Electronegativity and electron affinity

Postby Emma Boyles 1L » Sun Nov 12, 2017 12:17 pm

Electronegativity is how much an atom can draw an electron to itself and it is a calculated value.

Electron affinity is a measure of how much energy is released when an electron is added to an atom. The more energy released, the more favorable or the higher the electron affinity is of that atom because that atom is now at a lower energy state which it wants to be in.

Hope this helps!

Guangyu Li 2J
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Re: Electronegativity and electron affinity

Postby Guangyu Li 2J » Sun Nov 12, 2017 3:51 pm

The electron affinity refers to the energy change when an electron is attracted by a neutral atom or molecule in the gaseous state to form a anion.

The electronegativity means atoms' ability of attracting electrons.

Commonly, the electronegativity increases from the left of the period to the right, and from the bottom of the periods to the top of the period. The electron affinity also shows similar trends in the Periodic Table. In addition, according to the textbook, atoms with largest affinity are of elements in the 14th, 15th group.

ami patel
Posts: 20
Joined: Thu Jul 27, 2017 3:00 am

Re: Electronegativity and electron affinity

Postby ami patel » Sun Nov 12, 2017 4:06 pm

Both electronegativity and electron affinity are quite similar and have the same trend. electronegativity is the strength of attracting electrons while electron affinity is the heat released when an electron is added.


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