Molecule Shapes: Simulation
Investigate molecule shapes in 3D by building molecules by adding single, double, or triple bonded atoms or lone pairs of electrons to a central atom. Compare the shape and bond angles in real molecules to the values predicted using VSEPR theory. There are two modes as an option to run the simulation:
1. Model Mode:
2. Real Molecules Mode:
Molecule Shapes: Thought Activity
As you go through the simulation, think about and answer the following questions:
- There are cases where atoms are as far apart as possible but the angles between atoms are not the same. What shapes are these, and why might this happen?
- Explain why the bond angle in a water molecule is 104.5°, not 109.5° as shown in the model view.
- Explain why the bond angles in some real molecules do not match the bond angle predicted by VSEPR theory – for example, H2O, SO2, CIF3, NH3, SF4, BrF5.
- Build a molecule that has an octahedral electron geometry and a square planar molecule geometry.
Proceed to Comprehension Check