Ichem VSEPR Shapes

Linear

-2 bonds
-typically no lone pairs on the central electron

bent

-2 bonds

-lone pairs that push subsituent groups away

Trigonal planar

-3 bonds

-typically no lone pairs

T-shaped

-3 bonds

-2 lone pairs

Trigonal pyramidal

-3 bonds

-1 lone pair

Tetrahedral

-4 bonds

-no lone pairs

Disphenoidal

-4 bonds

-1 lone pair

Square planar

-4 bonds

-2 lone pairs

Trigonal bipyramidal

-5 bonds

-no lone pairs

Square-Based pyramidal

-5 bonds

-1 lone pair

Pentagonal planar

-5 bonds

-2 lone pairs

octahedral

-6 bonds

Pentagonal bipyramidal

-7 bonds

Square antiprismatic

-8 bonds
-(hardly any)

Angle rules

-bigger elements will increase angle

-but if they are further, angle decreases

-higher electronegativity, bigger orbital (lowers angle)

-if electronegativity density stays the same in the orbital, then, the angle gets bigger