How is the VSEPR theory used?

1 Answer

Answer:

VSEPR theory is used to determine the shapes of molecules.

Explanation:

VSEPR is short for Valence Shell Electron Pair Repulsion. It is a theory that basically says that electron pairs (bonding and nonbonding) of the central atom in a molecule will push as far away from each other as they possibly can in three dimensional space.

This means the bonding electron pairs in a molecule like #BeF_2# or #BeCl_2# push as far away from each other as they possibly can and create an angle of #180^0# across the molecule.

http://4.bp.blogspot.com/-WatSIEa-7E0/UEUYQ1oxudI/AAAAAAAAAzo/V_qa_RZRaWA/s400/Lewis-structures-of-BeF2-and-BeCl2gif

Here is a video which discusses other possible arrangements of electrons around the central atom and the shapes these arrangements will produce.

Hope this helps!