drawing Lewis structures  [ENDORSED]

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An Dang 3F
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Joined: Fri Sep 29, 2017 7:07 am

drawing Lewis structures

Postby An Dang 3F » Wed Oct 25, 2017 11:01 pm

When we are trying to draw Lewis Structures, why is it that the lowest ionization element goes into the center such as the Lewis structure for sulfate?

Sammy Thatipelli 1B
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Re: drawing Lewis structures

Postby Sammy Thatipelli 1B » Wed Oct 25, 2017 11:20 pm

To be honest, I think its a rule that is just set and there is not much of a strict reasoning behind it. I think that in the case of sulfate, having the S in the center allows for symmetry for the Lewis structure, as it would be difficult is putting 4 oxygens in the center. So, symmetry is a valid reasoning I believe for having the element with lowest ionization energy in the center, especially in this circumstance.

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Re: drawing Lewis structures  [ENDORSED]

Postby RussellChin_3A » Sat Oct 28, 2017 8:36 pm

Like Sammy said, putting the atom with lowest ionization energy makes it easier to draw a symmetrical molecule, but I also I think since the atom in the center has the lowest ionization energy of all atoms in the molecule, it would be easier for that electron to share the e- because there is a smaller amount of ionization energy that is needed to be over come in order for that e- to be shared.

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