Shapes

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

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Marsenne Cabral 1A
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Shapes

Postby Marsenne Cabral 1A » Sat Nov 10, 2018 5:34 pm

Are all molecules with four bonding pairs tetrahedral? What makes the difference if they are not?

Germar G 4F
Posts: 38
Joined: Fri Sep 28, 2018 12:28 am

Re: Shapes

Postby Germar G 4F » Sat Nov 10, 2018 5:39 pm

Yes, all molecules with four bonding pairs and no lone pairs will be tetrahedral.

Harshita Talkad 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: Shapes

Postby Harshita Talkad 4L » Sat Nov 10, 2018 5:41 pm

They are tetrahedral when there are four areas of electron density because the atoms will spread out as far apart from each other as possible.

204765696
Posts: 23
Joined: Wed May 16, 2018 3:00 am

Re: Shapes

Postby 204765696 » Sat Nov 10, 2018 5:44 pm

All molecules with four bonding pairs and no lone pairs are tetrahedral

Casandra
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Shapes

Postby Casandra » Sat Nov 10, 2018 5:44 pm

Marsenne Cabral 1A wrote:Are all molecules with four bonding pairs tetrahedral? What makes the difference if they are not?

All molecules with four bonding pairs and no lone pairs are tetrahedral. But if there was a lone pair, then it would be a trigonal pyramid, and so on. If a molecule has more or less than four bonding pairs then it is no longer a tetrahedral.

Vy Lu 2B
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

Re: Shapes

Postby Vy Lu 2B » Sat Nov 10, 2018 5:53 pm

The bonding pairs are what determine the naming of the shape of the molecule; hence, a molecule with four bonding pairs of electrons will always be tetrahedral. If a molecule has two bonding pairs and two lone pairs of electrons (which adds up to four regions of electron density), it is not a tetrahedral molecule even though it does have four electron regions. The lone pair regions of electrons do not contribute to the naming of the shape of the molecule.


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