Tetrahedral and its polarity

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

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Angeline 3E
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Joined: Wed Sep 18, 2019 12:20 am

Tetrahedral and its polarity

Postby Angeline 3E » Thu Nov 21, 2019 10:15 pm

im confused because a tetrahedral has bonds in different planes (like theres one w the dotted line and the solid line) does this means any molecule with a tetrahedral structure is always polar because how will the dipoles cancel out?

https://www.google.com/url?sa=i&source= ... 9684485742

Victor James 4I
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Joined: Wed Sep 18, 2019 12:20 am

Re: Tetrahedral and its polarity

Postby Victor James 4I » Thu Nov 21, 2019 10:18 pm

if all the bonded atoms are the same ( ex. CCl4, CH4) then there is no dipole

Angeline 3E
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Joined: Wed Sep 18, 2019 12:20 am

Re: Tetrahedral and its polarity

Postby Angeline 3E » Thu Nov 21, 2019 10:28 pm

Victor James 4I wrote:if all the bonded atoms are the same ( ex. CCl4, CH4) then there is no dipole

does this also apply to trigonal bipyramidal and octahedral?

Victor James 4I
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Joined: Wed Sep 18, 2019 12:20 am

Re: Tetrahedral and its polarity

Postby Victor James 4I » Thu Nov 21, 2019 11:23 pm

Angeline 3E wrote:
Victor James 4I wrote:if all the bonded atoms are the same ( ex. CCl4, CH4) then there is no dipole

does this also apply to trigonal bipyramidal and octahedral?


yep, for those the same thing applies. If they're all the same element around the central atom then its non-polar

Kassidy Ford 1I
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Re: Tetrahedral and its polarity

Postby Kassidy Ford 1I » Fri Nov 22, 2019 8:52 am

If you have a molecule like CHF3, it will be polar because not all of the atoms surrounding the C are the same, but will that affect the bond angles or do you still assume that it is 109.5

nicole-2B
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Re: Tetrahedral and its polarity

Postby nicole-2B » Fri Nov 22, 2019 11:44 am

Kassidy Ford 1J wrote:If you have a molecule like CHF3, it will be polar because not all of the atoms surrounding the C are the same, but will that affect the bond angles or do you still assume that it is 109.5

I believe it will have bond angles of 109.5 since the shape is still tetrahedral.

Justin Quan 4I
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Re: Tetrahedral and its polarity

Postby Justin Quan 4I » Fri Nov 22, 2019 12:08 pm

To add on, if the atoms surrounding the central atom is not the same, it will have dipole moment because the different surrounding atoms will have various electronegativity, therefore the dipole forces will not completely cancel out.


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