bond dissociation enthalpy HBDE Ionic and Covalent Bonding

chapter 9 Ionic and Covalent Bondingthe chemical bond : the force that holds atoms or ions together as an aggregate unitbond energy (or bond dissociation enthalpy , hbde ): energy required to break a chemical bond Cl Cl (g) ! 2 Cl (g); H = bond energy bond energy is always endothermicgenerally 3 types of bonds - Ionic , Covalent , metallicLewis Symbolsdeveloped by Lewis to represent an element and its number of valence electrons each side of element s symbol may have 0, 1, or 2 dots each dot represents a valence electron for main group elements: # valence e s = group #atoms tend to lose, gain, or share e- s in such a way that they attain a noble gas configuration (ns2 np6) Ionic compounds: typically metals with low ionization energy lose e- snonmetals with favorable electron affinity gain e- sThe Octet Rule molecular compounds:typically nonmetals will share e- s to form Covalent bondsThe Octet RuleEnergy Considerations of Ionic CompoundsLattice Energy, U.

Chapter 9 Ionic and Covalent Bonding the chemical bond: the force that holds atoms or ions together as an aggregate unit bond energy (or bond dissociation enthalpy, ∆HBDE): energy required to break a chemical bond Cl–Cl (g) ! 2 Cl (g); ∆H = bond

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  Chapter, Bond, Chapter 9, Bonding, Enthalpy, Dissociation, Covalent, Ionic, Covalent bonding, Bond dissociation enthalpy hbde ionic and covalent bonding, Hbde

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