Solutions to Hybrid and Molecular Orbitals Homework Problem Set

1. Draw Lewis dot structures, determine the hybridization of each atom, determine the molecular shape, determine the bond types, determine the bond angles, and sketch the orbital structure for.

   Compound	Structure	Hybridization	Shape	Bond Type	Bond Angle
   H2	lewis dot 3-D PDB	H none	linear	H-H sigma	N.R.
   CH4	lewis dot 3-D PDB	C sp3 H none	tetrahedral	C-H sigma	109
   NH3	lewis dot 3-D PDB	N sp3 H none	trigonal pyramid	N-Hsigma	109
   H2O	lewis dot 3-D PDB	O sp3 H none	bent	O-H sigma	109
   HCl	lewis dot 3-D PDB	Cl sp3 H none	linear	N.R.	H-Cl sigma
   HBr	lewis dot 3-D PDB	Br sp3 H none	linear	N.R.	H-Br sigma
   SiO2	lewis dot 3-D PDB	Si sp O sp2	Linear	180	S-O sigma S=O pi
   PCl5	lewis dot 3-D PDB	P sp3d Cl sp3	Trigonal Bipyramid	120 90	P-Cl sigma
   CO2	lewis dot 3-D PDB	C sp O sp2	Linear	180	C-O sigma C=O pi
   BeH2	lewis dot 3-D PDB	Be sp H none	Linear	180	Be-H sigma
   BF3	lewis dot 3-D PDB	B sp2 F sp3	Trigonal Planar	120	B-F sigma
   CF2Cl2	lewis dot 3-D PDB	C sp3 F sp3 Cl sp3	Tetrahedral	109	C-Cl sigma C-F sigma
   C2H6	lewis dot 3-D PDB	C sp3 H none	each C is Tetrahedral	109	C-C sigma C-H sigma
   C2H4	lewis dot 3-D PDB	C sp2 H none	each C is trigonal planar	120	C-C sigma C=C pi C-H sigma
   C2H2	lewis dot 3-D PDB	C sp H none	each C is Linear	180	C-C sigma C=C pi C=C pi C-H sigma

2. Draw Lewis dot structures, determine the hybridization of each atom and sketch the structure based on this model, draw molecular orbital energy level diagrams and sketch a structure based on this model for,

   Molecule	Lewis Dot	Hybridization	Hybrid Structure	MO energy level	MO structure
   H2		none		diagram
   N2	lewis dot	sp	figure	figure	figure
   O2	lewis dot	sp2	figure	figure	figure

   Compare the Lewis dot, hybrid, and MO models for describing the structure of these molecules.