CHE 106 Chapter Notes - Chapter 8.1-8.4: Triple Bond, Lattice Energy, Double Bond
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CHE 106 Full Course Notes
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Document Summary
Ch 8. 1 lewis symbols and the octet rule. Lewis symbol: allow for one electron on each side first before fully filling one side. Atoms gain, lose or share electrons to achieve the same number of electrons as the noble gas closest to them in the periodic table. Octet rule: atoms tend to gain, lose or share electrons until they are surrounded by eight valence electrons. Mostly applies to atoms that have s and p valence electrons. Ionic substances generally result from the interaction of metals on the left side of the periodic table with nonmetals on the right side. Usually brittle substances with high melting points. The loss of electrons from an atom is always an endothermic process. Ionic compounds are stable because the attraction between ions of opposite charge. Lattice energy: the energy required to completely separate one mole of a solid ionic compound into its gaseous ions. Formation of ionic compounds exothermic process.
