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Unformatted text preview: 3.15 3.17 a) tetrahedral, V-shaped b) tetrahedral, trigonal pyramidal c) trigonal bipyramidal, linear d) octahedral, square planar 3.21 Oxygen difluoride and phosphorus trichloride. The bond angles will be reduced as a result of the presence of the lone pairs. 3.23 a) sp 3 b) sp 3 c ) s p 3 d d) sp 3 d 2 3.27 Hydrogen selenide, because with more electrons, the dispersion forces would be greater (the slightly weaker dipole-dipole interaction than that of hydrogen sulfide is a less important factor). 3.31 Ammonia, because the neighboring molecules will hydrogen-bond to each other, providing a strong intermolecular force and hence a higher boiling point than phosphane, which has the weaker dipole-dipole interactions. 3.29 Just get the shapes, we didnt discuss point groups: a) Trigonal pyramidal b) Trigonal planar c) Tetrahedral d) Octahedral...
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