lewis structure

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megangeorge-1K
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Joined: Thu Feb 01, 2018 3:01 am

lewis structure

Postby megangeorge-1K » Wed Jun 13, 2018 8:58 pm

I'm drawing a blank, when drawing a lewis structure what determines which element goes in the middle?

Jared Pagal 1J
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Joined: Fri Apr 06, 2018 11:04 am

Re: lewis structure

Postby Jared Pagal 1J » Wed Jun 13, 2018 9:29 pm

in drawing a lewis structure, typically the least electronegative atom is the central atom

megangeorge-1K
Posts: 59
Joined: Thu Feb 01, 2018 3:01 am

Re: lewis structure

Postby megangeorge-1K » Wed Jun 13, 2018 9:43 pm

oh ok thank you!

melodyso1K
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Re: lewis structure

Postby melodyso1K » Wed Jun 13, 2018 9:46 pm

Also, the element in the middle is the one that has to make the most bonds!

melodyso1K
Posts: 24
Joined: Fri Apr 06, 2018 11:05 am

Re: lewis structure

Postby melodyso1K » Wed Jun 13, 2018 9:47 pm

melodyso1K wrote:Also, the element in the middle is the one that has to make the most bonds!

This was said today during one of the review sessions ^^

Megan Phan 1K
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Re: lewis structure

Postby Megan Phan 1K » Thu Jun 14, 2018 6:10 pm

The least electronegative, an one capable of making the most bond should be in the center.

Sollie1G
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Joined: Wed Nov 08, 2017 3:00 am

Re: lewis structure

Postby Sollie1G » Thu Jun 14, 2018 7:30 pm

It is usually the most electronegative, C is one of the more common ones!!

Yixiao Hu 3C
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Joined: Fri Sep 28, 2018 12:19 am

Re: lewis structure

Postby Yixiao Hu 3C » Mon Oct 29, 2018 3:12 pm

you mean the central atom ? choose atom with lowest ionization energy as central atom

AlyssaBei_1F
Posts: 99
Joined: Fri Sep 28, 2018 12:17 am

Re: lewis structure

Postby AlyssaBei_1F » Mon Oct 29, 2018 4:33 pm

The central atom is the atom in the middle. It is determined by the atom with the lowest ionization energy. Ionization energy increases up a group and increases across a period.

Cole Elsner 2J
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Joined: Fri Sep 28, 2018 12:25 am

Re: lewis structure

Postby Cole Elsner 2J » Mon Oct 29, 2018 5:05 pm

Typically the atom with the lowest ionization energy ends up in the middle for lewis structure. Remember, ionization energy increases from going up and to the right of the periodic table.

Meachelle_Lum_1I
Posts: 92
Joined: Fri Sep 28, 2018 12:24 am

Re: lewis structure

Postby Meachelle_Lum_1I » Mon Oct 29, 2018 5:27 pm

Some tips I find helpful:
- The atom with the lowest ionization energy ends up in the middle for lewis structure.
- Carbon always makes four bonds
Also, just remember that every element except H, He, Li, and Be follow the octet rule.


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