Lewis Structures show number of valence electrons around each
atom.
Octet Rule - desire for each atom to have eight electrons
around it.
Single bond - two electrons shared between atom designated by a single line -
Double bond - four electrons shared...designated by a double line =
Triple bond - six electrons shared...designated by three lines
=
Discussed bond geometry...
HBr
linear 180o polar covalent
F2
linear 180o
nonpolar covalent
BH3
120o nonpolar covalent
H2O
bent 104.5o polar covalent
PF3
pyramidal 107o polar
covalent