Trigonal planar molecular geometry (formaldehyde, CH_{2}O)
Tetrahedral molecular geometry (methane, CH_{4})
Trigonal pyramidal molecular geometry (ammonia, NH_{3}) [model]
rotated to view molecule from below
Bent molecular geometry (water, H_{2}O)
To help determine if the octet rule is followed recall Clark's Method (abbreviated) for determining bonding in covalent Lewis Structures:

Trigonal bipyramidal with angles of 90° & 120° (PCl_{5})
Seesaw with angles of 90° & 120° (SF_{4})
Tshaped with angles of 90° (ClF_{3})
Linear with angles of 180° (I_{3}^{})
Octahedral with angles of 90° (AsF_{6}^{})
Tetragonal pyramidal with angles of 90° (ICl_{5})
Square planar with angles of 90° (XeF_{4})
© R A Paselk
Last modified 12 April2013