CHEM 112 Chapter Notes - Chapter 8: Tetrahedron, Beryllium, Molecular Geometry
Document Summary
8. 1 types of chemical bonds: ionic bonding, electrons are transferred, metals react with nonmetals, ions paired have lower energy (greater stability) than separated ions, coulomb"s law. This text uses a practical definition to identify ionic compounds: Any compound that conducts an electric current when melted is an ionic compound. 8. 5 formation of binary ionic compounds: lattice energy, the change in energy that takes place when separated gaseous ions are packed together to form an ionic solid. M+ (g) + x- (g) (cid:224) mx (s: energy change is exothermic (negative sign) 617: the formation of ionic compounds is endothermic until the formation of the lattice, the lattice formed by alkali metals and halogens (1:1 ratio) is cubic except for cesium salts, lattice energy calculations. 8. 6 partial ionic character of covalent bonds: calculating percent ionic character. Percent ionic character: ionic vs. covalent measured dipole moment calculated dipole moment.
