Chapter 11 - a Only interested in location of molecules not...

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Chapter 11 I. Hydrogen Bonding a. Strongest intermolecular force b. Dipole-dipole c. N, O, F II. Solids a. Molecular solid i. Held together by intermolecular forces ii. Low melting point iii. Soft/brittle iv. nonconductors b. Metallic solid i. Positive cores of metal held by bonding of delocalized e - ii. Variable melting points iii. conducting c. Ionic solid i. Cation and anions held by ionic bonds ii. High melting point iii. Hard/brittle iv. Nonconducting solid v. Conducting liquid d. Covalent network solid i. Held together in large chains by covalent bonds ii. Very high melting point iii. Nonconducting III. Crystal Lattice
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Unformatted text preview: a. Only interested in location of molecules, not bonding b. One lattice point (atom) at same place in each basic unit of crystal i. Unit cell – smallest basic unit of crystal that makes the 3-D shape IV.Unit Cells a. Cubic b. Rhombohedral c. Hexagonal d. Monoclinic e. Orthorhombic f. Tetragonal g. Triclinic h. Simple Cubic i. 8 spheres but actually volume = 1 i. Body Centered Cubic i. 8 spheres with one in center = 2 j. Face centered Cubic V. Crystals a. Coordination number (closed pack structure) i. # molecules surrounding each atom...
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