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Summary: Ch 4
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Read the summary and the most important questions on Ch 4
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1 Ch 4
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Boron tends to form compounds with only 6 electrons
Electron deficient -
Nonmetals in the 3rd period and higher have either 10 or 12 electrons in outer shell
Valence shell expansion -
Trigonal pyramidal hybridization and bond angle
sp3, 109.5' -
water has a __ shape
bent -
Trigonal planar shape hybridization and bond angle
sp2, 120' -
linear hybridization and bond angle
sp, 180' -
In a polar bonds, the electrons are more attracted to the atom with greater __
electronegativity -
These two shapes will always be polar due to the lack symmetry
Bent and trigonal pyramidal -
Intermolecular forces include (weakest to strongest)
London Dispersion Force
Dipole-Dipole
Hydrogen bonds -
Short lived attraction due to instantaneous dipoles; important for nonpolar molecules
London Dispersion Force
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