Difference between Periodic trends  [ENDORSED]

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Nandhini_2K
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Joined: Fri Apr 06, 2018 11:03 am

Difference between Periodic trends

Postby Nandhini_2K » Sun May 06, 2018 8:41 pm

What is the difference between Electron Affinity and Electronegativity both seem too similar? Are there any specific ways to distinguish them?

nikitasridhar_1b
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Re: Difference between Periodic trends

Postby nikitasridhar_1b » Sun May 06, 2018 8:50 pm

electron affinity measures the energy change when an electron is added to an atom, whereas electronegativity refers to the attraction an atom has to an electron. one measures an energy difference and the other is a scale of attraction. they are both related, however, as electron affinity decreases (less energy required) as electronegativity increases (attraction to electrons increases)

Hannah Lee 1B
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Re: Difference between Periodic trends  [ENDORSED]

Postby Hannah Lee 1B » Mon May 07, 2018 3:19 am

Electron affinity is a measure of energy change when an electron is added while electronegativity is how attracted an atom is to electrons. While electron affinity is increasing, electronegativity is decreasing since as an atom is less attractive to electrons, it requires more energy to add an electron.

AnnaYan_1l
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Re: Difference between Periodic trends

Postby AnnaYan_1l » Mon May 07, 2018 10:26 pm

Hannah Lee 1B wrote:Electron affinity is a measure of energy change when an electron is added while electronegativity is how attracted an atom is to electrons. While electron affinity is increasing, electronegativity is decreasing since as an atom is less attractive to electrons, it requires more energy to add an electron.


This makes sense, but why do electronegativity and electron affinity both increase going from right and up?

Andrea Raymundo 1B
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Re: Difference between Periodic trends

Postby Andrea Raymundo 1B » Tue May 08, 2018 2:17 am

AnnaYan_1B wrote:
Hannah Lee 1B wrote:Electron affinity is a measure of energy change when an electron is added while electronegativity is how attracted an atom is to electrons. While electron affinity is increasing, electronegativity is decreasing since as an atom is less attractive to electrons, it requires more energy to add an electron.


This makes sense, but why do electronegativity and electron affinity both increase going from right and up?


this happens because the elemeents on the top right side of the periodic table are the ones who want to gain more electrons to fill up their shells and basically form an octet which is explained by the electron affinity. these same elements due to their want for more electrons tend to have a higher ability to attract and form bonds with other electrons (electronegativity).


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