electron group geometry and molecular geometry

Question

Determine the electron group geometry and molecular geometry

1. SiO2
2. BCl3
3. NO2-
4. TeBr4
5. PCl3
6. H2Se
7. XeCl4
8. BrF5
9. BrCl3

Answer 1

You need to draw the Lewis structures and then use VSEPR to determine the electron group geometry and the molecular geometry. It is difficult for us to draw anything on this platform, so I won't attempt the show you the Lewis structures. But hopefully you can draw them and then see what the geometries are.

SiO2

Si will be the central atom and it will have one lone pair and two bonding pairs.

Electron geometry is trigonal planar

Molecular geometry is bent

BCl3

B will be the central atom and it will have no lone pairs and 3 bonding pairs

Electron geometry will be trigonal planar

Molecular geometry will be trigonal planar

NO2-

N will be the central atom and will have one lone pair and 2 bonding pairs

Electron geometry will be trigonal planar

Molecular geometry will be bent

You try the rest. Good luck.