Where to put the lone pairs?

(Polar molecules, Non-polar molecules, etc.)

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Where to put the lone pairs?

Postby lizzygaines1D » Sun Nov 12, 2017 7:18 pm

So for tetrahedral molecules, you'd place the lone pairs in between the each shared electron pair, but what about a trigonal molecule? I guess I'm confused as to the fact that you're supposed to place lone pairs on opposite ends, but in the book it will show to lone pairs next to each other when its a trigonal molecule.

Bansi Amin 1D
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Re: Where to put the lone pairs?

Postby Bansi Amin 1D » Sun Nov 12, 2017 7:57 pm

What kind of trigonal do you mean? Planar or Bipyramidal?

Chris Pleman 3E
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Re: Where to put the lone pairs?

Postby Chris Pleman 3E » Sun Nov 12, 2017 11:58 pm

A tetrahedral shape shouldn't have any lone pairs, only trigonal pyramidal will have a singular lone pair above the central atom.

Michelle Nguyen 2L
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Re: Where to put the lone pairs?

Postby Michelle Nguyen 2L » Mon Nov 13, 2017 12:23 am

A molecular structure of trigonal planar shouldn't have any lone pairs. If you're referring to an electronic arrangement that is trigonal planar, then that can either have a molecular structure with three bonded atoms, making it trigonal planar, or two bonded atoms and one lone pair, making it bent, or even two lone pairs and one bonded atom making it linear.

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