Shapes of Molecules Using VSEPR

Lewis Structure molecules does not provide information about the shape of the molecule
VSPR theory can be used to determine the shape

VSEPR, which stand for Valance Shell Electron Pair Repulsion, can be used to estimate a shape of a molecule. VSEPR is not in itself a theory but can be used as an aide
Molecules will minimize electron pair repulsion which can determine its shape

Steric numbers can be found by adding the number of coordinated electrons with the number of lone pairs

By using the steric number the shape of a molecule can be found

2: Linear
3: Trigonal Planar
4: Tetrahedral
5: Trigonal bipyramidal
6: Octahedral
7: Pentagonal bipyramidal

The preferred rotation in any of these shapes minimizes interactions of lone pairs first then the interactions of line pairs

Shapes can be drawn in any rotation as long as the lone pairs minimizes interactions

Because electrons bonded between two atoms take up less space, they are distributed more evenly, for example the Hydrogens in are evenly spaced
Electrons in lone pairs take up more space and decreases the angle of other bonds, the Hydrogens in are closer to each other than