CHEM 112 Chapter Notes - Chapter 10.1-10.4: Chemical Polarity, Coordinate Covalent Bond, Electric Potential
Document Summary
Lewis theory: electrons, especially valence electrons, play a fundamental role in chemical bonding, electrons are transferred or shared in such a way that each atom acquires a stable electron configuration. In some cases, electrons are transferred from one atom to another; these are ionic bonds. In other cases, electrons are shared between atoms; these are covalent bonds configuration with 8 outer shell electrons or an octet. Lewis structures for ionic compounds: no bond is 100% ionic. Both the charges of the anion and the cation are shown. Octet rule - a requirement of 8 valence electrons. Single covalent bond - the sharing of a single pair of electrons between bonded atoms. Bond pair applies to a pair of electrons in a covalent bond. Lone pair applies to the pairs of electrons that are not involved in bonding. Coordinate covalent bond: a covalent bond in which a single atom contributes both of the electrons to a shared pair.
