CHM 25500 Lecture Notes - Lecture 3: Methyl Acetate, Formal Charge, Organic Compound

• School: Purdue University
• Department: Chemistry
• Course: CHM 25500
• Professor: Animesh V.Aditya

Document Summary

Chm 255 - lecture 3 - initial review continued and new material. Allows you to figure out where charges are located within a molecule. Formal charge = (initial number of valence electrons) - (number of non-bonding electrons (unshared pairs)) - (number of bonding electrons)/2. Calculate formal charge for each individual atom in a molecule. Organic molecules can be illustrated by including all atoms in the diagram. Line drawings can also be used for more complex molecules. Each line in a line drawing represents a carbon-carbon double bond unless another atom is attached to the end of the line. If an atom is not explicitly written at the end of a line it is assumed to be carbon. Hydrogens are not explicitly written when attached to carbon, only written when attached to nitrogen, oxygen, etc. Common set or arrangement of atoms in an organic molecule. Contain a double bond between two carbons.