unit cell
(black):
arrays
represent 2-D versions of
simple cubic, body-centered cubic, orthorhombic, monoclinic, and
hexagonal close-packed structures
discovery (green):
horizontal
and vertical lines of
different spacings, square arrays of different spacings.
VSEPR (red):
arrays
represent triatomic molecules
with different bond angles.
plane groups (blue):
arrays
have same size unit cells with
different symmetries.
