1. Overall goal: Atomic Structure Chemical Bonding 3D Molecular Structure
Molecular Properties

2. Bond
Force that holds groups of two or more atoms together and makes them function as a unit.
Bond is more stable than the two separated atoms (lower energy state).

3. Ionic Bonding

4. Covalent Bonding

5. Electronegativity

6. Polar Covalent Bonding

7. Clicker #1 Rank the following bonds from least polar to most polar:
Si-Cl P-Cl Mg-Cl S-Cl
A) S-Cl, P-Cl, Mg-Cl, Si-Cl
B) P-Cl, S-Cl, Si-Cl, Mg-Cl
C) Mg-Cl, Si-Cl, P-Cl, S-Cl
D) Mg-Cl, S-Cl, P-Cl, Si-Cl
E) S-Cl, P-Cl, Si-Cl, Mg-Cl

8. Clicker #2
How many electrons would hydrogen have to share in a covalent bond in order to have a noble gas electron configuration?
A) 0
B) 2
C) 3
D) 6
E) 8

9. General Rules… Follow the octet rule.
Follow the duet rule for hydrogen.
The total number of electrons in your Lewis structure must equal the total number of valence electrons.
The least electronegative atom is typically the central atom (except for hydrogen).