electronegativity trend

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Tracey Tran 3I
Posts: 50
Joined: Thu Jul 11, 2019 12:16 am

electronegativity trend

Postby Tracey Tran 3I » Sun Nov 03, 2019 10:02 am

Why does electronegativity decrease going down the column?

Naneeta Desar 1K
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: electronegativity trend

Postby Naneeta Desar 1K » Sun Nov 03, 2019 10:07 am

Electronegativity decreases down a group due to the increase in shells making the electrons further from the nucleus therefore decreasing the attraction between the protons and electrons.

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

Re: electronegativity trend

Postby Michelle Chan 1J » Sun Nov 03, 2019 10:16 am

The distance between the nucleus and the electrons increase, therefore decreasing the attraction for e-.

rohun2H
Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

Re: electronegativity trend

Postby rohun2H » Sun Nov 03, 2019 10:44 am

Electrons will be further away from the nucleus in increasing shells, therefore pull on electrons is less.

Areli C 1L
Posts: 95
Joined: Wed Nov 14, 2018 12:19 am

Re: electronegativity trend

Postby Areli C 1L » Sun Nov 03, 2019 7:43 pm

The larger the shell gets the lower electronegativity the element will have because that larger outer shell's electron is a lot farther from the nucleus.

205154661_Dis2J
Posts: 109
Joined: Wed Sep 18, 2019 12:21 am

Re: electronegativity trend

Postby 205154661_Dis2J » Sun Nov 03, 2019 10:22 pm

Electronegativity goes down the periodic table because as the electrons are farther away from the nucleus, there is decreased attraction thereby lessening the pull.

ZainAlrawi_1J
Posts: 71
Joined: Sat Aug 24, 2019 12:16 am

Re: electronegativity trend

Postby ZainAlrawi_1J » Sun Nov 03, 2019 10:24 pm

It decreases a the distance between the electrons increases further away from the nucleus, as such decreasing their attraction.

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

Re: electronegativity trend

Postby J Medina 2I » Sun Nov 03, 2019 10:28 pm

Electronegativity decreases down a column because the atom gets larger and the electron gets farther away from the pull of the positively charged nucleus. Ionization is related to this since this weaker pull allows less energy to be needed to remove an electron from an atom.

Mulin_Li_2J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

Re: electronegativity trend

Postby Mulin_Li_2J » Sun Nov 03, 2019 11:26 pm

Electronegativity of an element is derived by combing both its ionization energy and electron affinity mathematically with the equation (Ionization Energy + Electron Affinity) / 2.

When going down a column in the periodic table, ionization energy and electron affinity both decreases because as the atomic radius increases, it's easy for the element to lose an electron and hard to add one extra. Thus, based on the mathematical expression, electronegativity decreases as going down a column in the periodic table.

jmtz1I
Posts: 30
Joined: Wed Sep 18, 2019 12:15 am

Re: electronegativity trend

Postby jmtz1I » Sun Nov 03, 2019 11:36 pm

Electronegativity decreases as we go down a column because the distance between the nucleus and the electrons increases, meaning that the electrons are far from the nucleus.


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