2 periodic trends and bonding

2 periodic trends and bonding - Electron Domains...

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Periodic Trends and Bonding Groups – alkali metals, alkaline earth metals, halogens, noble gases, transition metals, rare earth metals Periodic Trends -Atomic Radius -Ionic Radius -Ionization Energy -1 st , 2 nd ,… -Electron Affinity -Electronegativity Bonding Covalent (molecular or network solids), Ionic (ionic crystals), Metallic (metallic lattices) Ionic compounds – high m.p. and b.p., brittle Metallic – high m.p. and b.p. (usually), conduct electricity, malleable, ductile Molecular – lower m.p. and b.p. -Covalent -Lewis Dot Symbols (Ex. CH 4 , CO 2 , SF 4 ) -Formal Charges -Polar Covalent Bonds -Coordinate Covalent Bonds -Hybridization -VSEPR Theory
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Unformatted text preview: Electron Domains Hybridization Bond Angle Electron Domain Geometry Lone Pairs Molecular Geometry 2 sp 180 Linear Linear 3 sp 2 120 Trigonal planar Trigonal planar 1 Bent 4 sp 3 109.5 Tetrahedral Tetrahedral 1 Trigonal pyramidal 2 Bent 5 sp 3 d 90 , 120 Trigonal bipyramidal Trigonal bipyramidal 1 See-saw 2 T-shaped 3 linear 6 sp 3 d 2 90 Octahedral Octahedral 1 Square pyramidal 2 Square planar-Intermolecular Forces-Hydrogen Bonding-Ion-dipole, dipole-dipole, dipole-induced dipole-London Dispersion Forces (Van der Waals)-Effects on m.p., b.p., vapor pressure, viscosity...
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