MOLECULAR GEOMETRY

• molecular geometry - Pertains to three dimensional arrangement of atoms in a molecule.
• lewis electron dot structure - Valence electron are represented using a dot around the symbol of the elements.
• lone pair - A pair of valence electrons that are not shared with another atom.
• bond pair - A pair of valence electrons that are shared with another atom.
• valence shell electron pair repulsion theory - A model used to predict 3-D molecular geometry based on the number of valence shell electron bond pairs among the atoms in a molecule or ion.
• linear - 2 bond pairs No lone pair .
• trigonal planar - 3 bond pairs No lone pair
• tetrahedral - 4 bond pairs No lone pair
• trigonal pyramid - 3 bond pairs 1 lone pair.
• bent - 2 bond pairs 2 lone pairs .
• trigonal bipyramidal - 5 bond pairs No lone pair.
• octahedral - 6 bond pairs No lone pair.