# NodeGame2 for Chemical Bonding

NodeGame2 for Chemical Bonding is an interactive tool that teaches you how to sketch the
allowed linear combinations of atomic orbitals (LCAO's) that make up the delocalized molecular orbitals (MO's) for inorganic and
organic molecules without using group theory. The first part of Node Game
consists of a set of six interactive practice exercises that help you develop
sketches for the LCAO MO's for H_{2}, H_{2}O, BF_{3},
C_{5}H_{5}^{-}, PF_{6}^{-} and (h_{5}-C_{5})_{2}Fe. The second part of Node Game consists of
Homework Drawingboard; a
program that allows you to sketch the permitted LCAO MO's
and also the allowed vibrations for molecules possessing a wide range of
geometries that you can create on your own.

You will find NodeGame2 to be most useful if you obtain a copy of the textbook that
accompanies it. This short text, *A Pictorial Approach to Molecular Bonding
and Vibrations*, by John Verkade of Iowa State UniversityÕs Chemistry
Department, takes you step by step through the development of sketches of the
LCAO MO's for examples of inorganic and organic
molecules having a large variety of shapes. Included in the examples are
polymers and solid state materials. The book,
available from Springer Verlag, takes a
non-mathematical, highly pictorial approach. All you need to know is a little
high school chemistry and some simple high school geometry!

## Downloading Instructions

NodeGame2 for Chemical Bonding is available only for the Macintosh
download Nodegame2 for Chemical Bonding now