RHED-Elec-Molec Practice

RHED-Elec-Molec Practice - Boron Trichloride, BCl 3 Valence...

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Unformatted text preview: Boron Trichloride, BCl 3 Valence e = 3 + (3x7) = 24 B Cl Cl Cl RHED = 3TRIGONAL PLANAR POLAR covalent bonds; NON POLARmolecule RHED = Electronic geometry = lone pairs on B Molecular geometry = molecule Methane , CH 4 Valence e = 4 + (4x1) = 8 C H H H H RHED = Very slightly POLAR covalent bonds; NON POLARmolecule C H H H H REDRAW!! ALL ANGLES Electronic geometry = lone pairs on C Molecular geometry = molecule Ammonia , NH 3 Valence e = 5 + (3x1) = 8 POLAR covalent bonds; due to lone pair, POLARmolecule N H H H N H H H REDRAW!! lone pair needs more room: ALL HNH ANGLES RHED = Electronic geometry = Molecular geometry = molecule lone pair on N Due to lone pair, Freon 12 , CCl 2 F 2 Valence e = 4 + (4x7) = 32 POLAR covalent bonds; dipoles do not cancel: POLAR molecule C Cl Cl F F REDRAW!! C Cl F F Cl molecule dipoles do not cancel: A series of related molecules which are polar? C Cl Cl Cl H C H H H H C H H Cl H C Cl H Cl H C Cl Cl Cl Cl A B C D E Chlorine trifluoride, ClF 3 Valence e = 7 + (3x7) = 28...
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RHED-Elec-Molec Practice - Boron Trichloride, BCl 3 Valence...

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