Concept explainers
Interpretation:
A concept map of relation of VSEPR model theory, hybridization theory and molecular shape needs to be drawn.
Concept introduction:
The Lewis structure of an organic compound represents the bonding of atoms with lone pairs (if any). It indicates the bonds with atoms and also arrangement of atoms in molecule.
Hybridization of any atom indicates the molecular geometry of molecule. The formula to check the hybridization can be written as:
Hybridization = Number of sigma bonds + Number of lone pair
The molecular geometry of molecules with lone pair on central atom is given by VSEPR theory.

Answer to Problem 131A
Explanation of Solution
VSEPR theory stands as Valence Shell Electron Pair Repulsion Theory. It helps to predict the molecular shape or geometry of the molecule with the help of the number of bond pair or lone pair present in it.
According to VSEPR theory, the presence of lone pair on the central atom of molecule causes deviation from standard molecular geometry. So valence electrons provide Lewis structure which gives idea about electron pair geometry and hybridization. Both of these information are used with VSEPR theory to get the molecular shape.
The concept map is represented as follows:
Chapter 8 Solutions
Chemistry: Matter and Change
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