1. Chemical Bonding

2. Draw the following
PBr3
N2H2
CH3OH
NO2-

3. VSEPR Theory
Repulsion between valence electron pairs causes the pairs to be oriented as far apart as possible

4. Tetrahedral geometry
4 single bonds
No unshared pais

5. Triangular Pyramidal
3 single bonds and one unshared pair

6. Bent
2 single bonds and two unshared pairs

7. Linear
Only two atoms or
Two double bonds and no unshared pairs

8. Bent
One single and one double bond and one unshared pair

9. Triangular Planer
One double and two single bonds and no unshared pairs

10. Polar Molecules
When two unlike atoms are covalently bonded, the shared electrons will be more strongly attracted to the atom of greater electronegativity

11. Polar molecules behave as if one end is positive and one end is negative
The more electronegative atom is negative

12. Sometimes atoms with high differences in electronegativity will not be polar molecules because the structure is symmetrical and the polarity cancels out

14. Polar Molecules
In order to be a polar molecule, two conditions must be met 1) there must be a polar difference in electronegativity 2) the molecule is NOT be symmetrical