1. Octet Rule
Objective: I will apply the octet rule to predict bonding in molecules and draw Lewis Dot Structures for molecules that contain double and triple bonds.
Entry Task -
Draw the Lewis Dot Structures for the two covalently bonded molecules shown here. Explain how you arrived at your answer.
Cl2 O2 N2

2. Definitions
Octet Rule - Nonmetal atoms combine so that each atom has a total of 8 valence electrons by sharing electrons. (exceptions - H and He are full with 2 e-)

3. Figuring out structures
HONC helps you to understand how many bonds an atom can make
Lewis Dot Structure - shows that covalent bonds are shared pairs of electrons between two atoms, also shows single electrons that can pair with other single electrons to make covalent bonds
Octet Rule - helps you to make sure each atom has the correct number of electrons

4. Double and Triple Bonds
When do you need double/triple bonds to satisfy the octet rule?
Do molecules with double/triple bonds satisfy HONC1234?
Is it possible to make a triple bonded oxygen molecule?
In theory are quadruple bonded carbon molecules possible?

5. Exit Task
Which of these compounds has multiple bonds in it (double or triple bonds)? Explain.
Draw one possible structural formula for C4H6
C4H10
C4H6
As, arsenic