Chapter 9 Summary
• Atoms gain, lose, and share electrons to become more stable.
• The Lewis Dot Structure is a useful tool that helps predict the bonding behavior of atoms and the shapes these atoms will form.
• Electronegativity is the “pulling power” that an atom has on bonding electrons. The higher the electronegativity of an atom, the closer it will pull the bonded electrons.
• The type of bond two atoms form (ionic, polar covalent, non-polar covalent) is characterized by how equal or unequal the sharing of the bonding electrons.
• There are seven diatomic molecules found naturally. These seven atoms are more stable in pairs than they are alone and therefore bond among themselves to achieve this stability.
• The Valence Shell Electron Pair Repulsion (VSEPR) Theory predicts the shape of molecules based on the configurations of valence electrons in a central atom.
• The overall polarity of a molecule is determined by the polarity of the bonds in a molecule and the shape of the molecule. Thus it is possible to have a non-polar molecule whose bonds are ionic. The shape of the molecule is more important than the bond polarity.
• The polarity of a molecule determines many of the physical properties of a substance.
• The Lewis Dot Structure is a useful tool that helps predict the bonding behavior of atoms and the shapes these atoms will form.
• Electronegativity is the “pulling power” that an atom has on bonding electrons. The higher the electronegativity of an atom, the closer it will pull the bonded electrons.
• The type of bond two atoms form (ionic, polar covalent, non-polar covalent) is characterized by how equal or unequal the sharing of the bonding electrons.
• There are seven diatomic molecules found naturally. These seven atoms are more stable in pairs than they are alone and therefore bond among themselves to achieve this stability.
• The Valence Shell Electron Pair Repulsion (VSEPR) Theory predicts the shape of molecules based on the configurations of valence electrons in a central atom.
• The overall polarity of a molecule is determined by the polarity of the bonds in a molecule and the shape of the molecule. Thus it is possible to have a non-polar molecule whose bonds are ionic. The shape of the molecule is more important than the bond polarity.
• The polarity of a molecule determines many of the physical properties of a substance.