Lone Pairs and Lewis Bases

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Jeffrey Hablewitz 2I
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Joined: Wed Sep 30, 2020 9:33 pm

Lone Pairs and Lewis Bases

Postby Jeffrey Hablewitz 2I » Sun Nov 15, 2020 11:44 pm

Do all lewis bases have lone pairs on the central atom? Are all molecules with lone pairs on the central atom considered lewis bases?

Eve Gross-Sable 1B
Posts: 92
Joined: Wed Sep 30, 2020 10:02 pm
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Re: Lone Pairs and Lewis Bases

Postby Eve Gross-Sable 1B » Sun Nov 15, 2020 11:46 pm

Yeah, lewis basis typically have lone pairs on the central atom so that they can donate to compounds that will accept electrons.

505612629
Posts: 44
Joined: Wed Sep 30, 2020 9:43 pm

Re: Lone Pairs and Lewis Bases

Postby 505612629 » Sun Nov 15, 2020 11:48 pm

Lewis bases tend to have lone pairs and can "donate" to compounds that are Lewis acids or "accepters" of electrons.

Minh Nguyen 3A
Posts: 38
Joined: Wed Sep 30, 2020 9:36 pm

Re: Lone Pairs and Lewis Bases

Postby Minh Nguyen 3A » Sun Nov 15, 2020 11:49 pm

Lewis bases should have lone pairs surrounding the central atom, so that Lewis Acids would be able to accept those lone electron pairs.

Samudrala_Vaishnavi 3A
Posts: 93
Joined: Wed Sep 30, 2020 9:34 pm

Re: Lone Pairs and Lewis Bases

Postby Samudrala_Vaishnavi 3A » Mon Nov 16, 2020 9:14 am

In general, Lewis acids are electron-deficient and lone pairs on the central atom, especially excess ones if the central atom is a period 3 or greater element are a result of excess valence electrons so it's likely that the element is a base rather than an acid. Another kind of rule of thumb, Period 13 elements tend to have 5 valence electrons forming their central atom octet so they are usually Lewis acids.


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