Lewis Dot Structures: Ionization Energy

Moderators: Chem_Mod, Chem_Admin

Samantha Chang 2K
Posts: 69
Joined: Fri Sep 28, 2018 12:17 am

Lewis Dot Structures: Ionization Energy

Postby Samantha Chang 2K » Sun Oct 28, 2018 9:44 pm

Why do we choose the atom with the lowest ionization energy as the central atom for Lewis Dot Structures?

Rebecca Park
Posts: 30
Joined: Fri Sep 28, 2018 12:17 am

Re: Lewis Dot Structures: Ionization Energy

Postby Rebecca Park » Sun Oct 28, 2018 9:58 pm

Mostly because it has the most open spaces to add

Celeste 1I
Posts: 44
Joined: Fri Sep 28, 2018 12:18 am

Re: Lewis Dot Structures: Ionization Energy

Postby Celeste 1I » Sun Oct 28, 2018 10:01 pm

I like to think of it as how many "open" spaces the atoms have. For example, when choosing what the central atom in CO2 is, C has 4 open spaces while O has 2 to fill the shells. So, it would make sense to choose C since it has more open spaces. Hope this helps!

Luis_Yepez_1F
Posts: 50
Joined: Fri Sep 28, 2018 12:18 am

Re: Lewis Dot Structures: Ionization Energy

Postby Luis_Yepez_1F » Sun Oct 28, 2018 10:20 pm

The element with the lowest energy means that it can bond with more elements, which is why it is a great starting point in the center.

Soyoung Park 1H
Posts: 30
Joined: Sat Sep 29, 2018 12:15 am

Re: Lewis Dot Structures: Ionization Energy

Postby Soyoung Park 1H » Sun Oct 28, 2018 11:12 pm

Does anyone know where to start drawing dots? For Chlorine for example, all sides have two dots except for the left one. I'm not sure of the order.

deepto_mizan1H
Posts: 65
Joined: Fri Sep 28, 2018 12:16 am

Re: Lewis Dot Structures: Ionization Energy

Postby deepto_mizan1H » Mon Oct 29, 2018 3:36 pm

Since it has the lowest ionization energy, you can think of it in terms of is it more willing to gain or lose an electron (become an ion) or to ultimately share or gain the electron in a bond. C is generally a "backbone" for structures because it is direct in the middle with 4 valence electrons, making it a perfect acceptor of bonds. Elements such as H or Cl would not particularly enjoy that benefit as it is near completion already. Additionally, when creating the structures it doesn't matter which side you put the valence dots as long as they are accurate in number and placement on the respective atoms.

Samantha Chang 2K
Posts: 69
Joined: Fri Sep 28, 2018 12:17 am

Re: Lewis Dot Structures: Ionization Energy

Postby Samantha Chang 2K » Sat Nov 03, 2018 12:09 am

Thanks guys! This really helped :)


Return to “Ionic & Covalent Bonds”

Who is online

Users browsing this forum: No registered users and 1 guest