homework problem 4.17  [ENDORSED]

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

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Rosamari Orduna 1D
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Joined: Fri Apr 06, 2018 11:04 am

homework problem 4.17

Postby Rosamari Orduna 1D » Sat Jun 02, 2018 7:02 pm

So #4.17 asks: Predict the bond angles at the central atom of the following molecules and ions: (a) ozone, O3; (b) azide ion, N3-; (c) cyanate ion, CNO-; (d) hydronium ion, H3O+.

Can someone please explain why N3- and NCO- can both have bond angles of about 180?

thank yyou

Andre-1H
Posts: 39
Joined: Fri Apr 06, 2018 11:01 am

Re: homework problem 4.17

Postby Andre-1H » Sat Jun 02, 2018 8:44 pm

If you're ever confused about shape I think the best way is to start by drawing the lewis structure. For N3- the lewis structure has only 2 regions of electron density and no lone pairs, so it is linear. (Using this website : https://chemstuff.co.uk/academic-work/a ... molecules/ ) The bond angle for all linear shapes is 180 degrees. The same concepts can be applied for NCO-. let me know if i wasn't clear

Maria Roman 1A
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Joined: Fri Apr 06, 2018 11:04 am

Re: homework problem 4.17

Postby Maria Roman 1A » Sun Jun 03, 2018 5:08 pm

This may help visualize the molecules' 180 angles

34382446_577373312640666_4886151733065023488_n.jpg

Vivian Gonzalez 1A
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Joined: Fri Apr 06, 2018 11:03 am

Re: homework problem 4.17  [ENDORSED]

Postby Vivian Gonzalez 1A » Sun Jun 03, 2018 5:12 pm

Based on the lewis structure there are 2 regions of electron density, therefore, the molecule has a linear shape with 180 degree angles.

CarinaVargas1J
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Joined: Wed Nov 15, 2017 3:00 am

Re: homework problem 4.17

Postby CarinaVargas1J » Sun Jun 03, 2018 11:09 pm

Well since both shapes are linear, they have bond angles of 180 degrees.


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