Molecular Shape

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

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Claudeth Martinez 1D
Posts: 52
Joined: Fri Sep 28, 2018 12:18 am

Molecular Shape

Postby Claudeth Martinez 1D » Sun Nov 11, 2018 10:12 pm

Hello,

How can I tell apart when it is linear or bent/angular? thank you!

Anna O 2C
Posts: 98
Joined: Fri Sep 28, 2018 12:19 am

Re: Molecular Shape

Postby Anna O 2C » Sun Nov 11, 2018 10:30 pm

I'm pretty sure a molecule is going to be linear as long as there aren't any lone pairs on the central atom. When the molecule is linear, there aren't any lone pairs taking up space and pushing the other attached atoms away, thus bending the molecular shape. I think this only applies to chains of atoms like CN or OCl2.

Ivan Tadeja 4B
Posts: 31
Joined: Fri Sep 28, 2018 12:28 am

Re: Molecular Shape

Postby Ivan Tadeja 4B » Sun Nov 11, 2018 11:43 pm

If there are no lone pairs on the central atom, then the configuration is linear which means the bond angle will always be 180 degrees.

Jackie Ngo 1C
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

Re: Molecular Shape

Postby Jackie Ngo 1C » Sun Nov 11, 2018 11:47 pm

The difference between a bent molecule and a linear one is that the bent molecule has lone pairs whereas the linear one doesn't. This makes sense because the lone pair on the central atom creates a charge that pushes the outside atoms away, consequently bending the molecule.

Nicolette_Canlian_2L
Posts: 77
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

Re: Molecular Shape

Postby Nicolette_Canlian_2L » Mon Nov 12, 2018 12:35 am

I think there might also be a chart to help memorize the different shapes of molecules. It should list the number of bonded and lone pairs, which determine the molecular shape.

Ethan Yi 1K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Molecular Shape

Postby Ethan Yi 1K » Mon Nov 12, 2018 2:12 am

just look and see if there are any lone pairs. If there are, there will be repulsion with the bonding pairs and thus a bent shape will be formed.


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