## Different Shapes

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

Shundeen Martinez 1D
Posts: 31
Joined: Fri Sep 28, 2018 12:18 am

### Different Shapes

I vaguely remember molecular shapes from high school, what are the shapes again? And how can you find out the shape?

Hedi Zappacosta 1E
Posts: 66
Joined: Fri Sep 28, 2018 12:27 am

### Re: Different Shapes

Dr. Lavelle started going over this in lecture today. The shape of a molecule is always dependent on bonds being as far away from each other as possible. For a molecule with a central atom that has two bonds, it will be linear because the bonds will be farthest apart at 180 degrees. For a molecule with three bonds on the central atom, it will be trigonal planar with 120 degrees between each atom. And for a molecule with four bonds on the central atom, it will be a tetrahedron with 109.5 degrees between each atom.

Nicole Lee 4E
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

### Re: Different Shapes

You can find the shape by drawing a Lewis structure to determine the number of bonding pairs around the central atom.

Posts: 33
Joined: Fri Sep 28, 2018 12:18 am

### Re: Different Shapes

In class we covered three important shapes so far. They are linear (180 degrees w/ 2 bonding pairs), trigonal planar (120 degrees w/ 3 bonding pairs), and tetrahedral (109.5 degrees w/ 4 bonding pairs).

harperlacroix1a
Posts: 43
Joined: Fri Sep 28, 2018 12:19 am

### Re: Different Shapes

In today's lecture (11/9) we went over linear, trigonal planar, and tetrahedral.