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Lone Pair=Polar?

Posted: Tue Jun 12, 2018 5:48 pm
by FizaBaloch1J
If a lewis structure has a lone pair on central atom, does that automatically make the structure polar?

Re: Lone Pair=Polar?

Posted: Tue Jun 12, 2018 9:19 pm
by Chem_Mod
No, for example square planar has 4 atoms attached and 2 lone pairs, but it is nonpolar if all the attachments are the same.

Re: Lone Pair=Polar?

Posted: Wed Jun 13, 2018 12:16 am
by Myles Chang 1B
This is not necessarily true. For example, XEF2 has two lone pairs, yet is still nonpolar and linear.

Re: Lone Pair=Polar?

Posted: Wed Jun 13, 2018 1:28 pm
by FizaBaloch1J
Chem_Mod wrote:No, for example square planar has 4 atoms attached and 2 lone pairs, but it is nonpolar if all the attachments are the same.


Ah, makes sense! Thank you!