1. What does this mean to you?
WARM UP
“Of all the things you wear, your expression is the most important.” – Janet Lane
What does this mean to you?
Do you agree with this?

2. The Big Bang Theory

3. Periodic Table and Electron Configurations

4. Sub-Shell Blocks s-block, main group on left
p-block, main group on right
d-block, transitions in middle
f-block, lanthanides and actinides

5. Sub-Shell Blocks
Block element is in represents the last subshell e- will be put in
Ex: Mn = d Pb = p U = f

6. Groups and e- Count across to find how many e- are in subshell
Ex: Mn = 5 Pb = 2 U = 4

7. Periods and Shells Each period represents one shell
Mn= 4 shells Pb= 6 shells U= 7 shells

8. Periods and Shells
s and p blocks are true shell/period matches (Si is 3p)
d-blocks are shell 1 less than period (Os is 5d)
f-blocks are in shell 2 less than period (Gd is 4f)

9. Core and Valence e- Core e- are in the inner rings
Valence e- are in the outermost shell
Important!
Core e- are in the inner rings
Filler

10. Noble Gas Notation
Shows e- in last period (valence) – the important ones
Inner e- configuration shortened to noble gas (less important)
1s22s22p6 = Ne
Al = [Ne] 3s23p1

11. Noble Gas Notation Ex. – Fr and Ge Steps Write preceding noble gas
Determine valence shell
Identify sub-shell block(s)
Count boxes

12. WRAP UP
Describe the location of each subshell block in 3 words or less. s: p: d: f:

13. WARM UP Identify the subshell block for: Ca, W, and P
Identify the valence shell for:
Mg, U, and Xe
Identify the # of e- in the p subshell for:
C, Pb, Ge, and In

14. WRAP UP Identify the subshell block for: C and U
Identify the valence shell for:
Cu, Pb, and K
Identify the # of e- in the p subshell for:
P, Xe, and Br