To Do 7th Lon-Capa assignment due Friday, April 8th by 10 pm.

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To Do 7th Lon-Capa assignment due Friday, April 8th by 10 pm. Quiz #5 on Wednesday, April 13 in Discussion. Read Chapter 9.1 and do the suggested homework.

Lewis Structures Determine the total number of valence electrons in the molecule. Form at least one bond between atoms in the molecule (a pair of electrons is a bond) Arrange the rest of the electrons (in pairs) to satisfy the octet rule or duet rule (for hydrogen). Watch for exceptions.

Chapter 8 Problem

VSEPR – General Guidelines Draw the Lewis structure. If the octet rule is exceeded, add electrons to the central atom. Multiple bonds count as one direction (or one “effective pair”). Consider the lone pairs when determining the geometry. Consider only the atoms when determining the shape. Polarity comes from asymmetry.