VSPER
VSEPR, also known as Valence Shell Electron Pair Repulsion, is a model that allows an individual to figure out the geometry of a molecule that allows the least amount of repulsion. DEET has a few VSEPR shapes. The first VSEPR shape DEET has is a tetrahedral. The tetrahedral shape can be seen in DEET when carbon is in the center and it is surrounding by three hydrogens and one other carbon. In a tetrahedral, there are zero lone pairs and four bonding pairs. The bond angle of a tetrahedral is 109.5 degrees. Another shape seen in DEET is trigonal pyramidal. This shape can be seen when carbon is in the middle and it is surrounding by three hydrogens, leaving one lone pair of carbon. The bond angle of trigonal pyramidal is 107 degrees. The final VSEPR shape seen in DEET is linear. This shape is seen when carbon is in the middle and hydrogen surrounds either side of it. The bond angle of this shape is 180 degrees. The valence shell electrons are all negatively charged and therefore are constantly repelling each other. Repulsion causes these molecules to become the shape they became in order to be far away from other electrons. Electrons try and stay far away from each other in order to maximize repulsion.
