Ionic, HIonic, H-bonding, Dipole, or London?bonding, Dipole, or London?ionic*IonicionicΔEN = 1.7 - 3.2Londonnonpolar--Symmetricalmolecule (any ΔEN)H-bonding*polarpolarH + N,O,FpolarnonpolarMoleculedipole-dipole*polarΔEN = 0.5 - 1.7LondonnonpolarΔEN = 0 - 0.5IMFBondDetails*Since all compounds have London forces. London forces are also present. However, their affect is minor and overshadowed by the stronger forces present.Note: the term “polar” is used interchangeable with “polar covalent”. Likewise, “nonpolar” and “nonpolar covalent” mean the same thing.Network solids (covalent crystals)Network solids (covalent crystals)• There are some compounds that do not have molecules, but instead are long chains of covalent bonds (E.g. diamond)CCCCCCCCCCCCCCCCC• This happens in 3 dimensions, creating a crystal• Because there are only covalent bonds, network solids are extraordinarily strongMetallic crystals• Metals normally occur as solids (high melting points).
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