Lewis Dot Diagrams
Show the outermost(valence) electrons for an atom
Ex:
Li
N
Be
O
B
F
C
Ne
(has an OCTET)
Video Link for Drawing Lewis Dot
Diagrams
https://www.youtube.com/watch?v=FvSinxeYW
sA
You try……
As
He
Kr
Al
Sr
Br
Ra
Cs
Pb
PRACTICE PROBLEMS
 Draw the electron dot symbols for:
1.
2.
3.
4.
5.
6.
Na
P
Ar
S
Mg
He
Activity—Periodic Pyramid
Color each row of your periodic pyramid the color listed below.
Make sure to color starting at the Beginning of that row
THROUGHOUT the End of that row.
Row 1 = red (H all the way to the end)
Row 2 = orange (Li through Ne)
Row 3 = yellow (Na through Ar)
Row 4 = green (K through Kr)
Row 5 = blue (Rb through Xe)
Row 6 = dark purple (Cs through Rn)
Row 7 = light purple (Fr through #118)
***choose 4 DISTINCTLY different colors to color the “s” “f”,
“d”, and “p” labels at the top of the pyramid
***cut off all the black
portion. Do not detach the
base of the pyramid. Tape the
sections together that say
“glue/tape”. Create your
pyramid!!
Electron Energy Levels & Sublevels
 Electrons are located within the atom outside the
nucleus on energy levels. Within these energy levels
are sublevels.
 Possible sublevels in order of increasing energy: s,p,d,f
 Elements are located within the s, p, d, and f blocks on
the periodic table (this represents which sublevel these
elements’ valence electrons are on)
 These sublevels are used to write an atom’s electron
configuration
Electron Configurations—Rows 1-3
 Show the electron arrangement within the electron cloud
on certain energy levels and sublevels
Ex: Hydrogen--1s1
Helium--1s2
Lithium—1s2 2s1
Beryllium– 1s2 2s2
Boron – 1s2 2s2 2p1
Oxygen --1s2 2s2 2p4
Neon—1s2 2s2 2p6
You try……. (configurations & dots)
Nitrogen
Fluorine
Sodium
Phosphorus
You try….. (configurations & dots)
Argon
Sulfur
Aluminum
magnesium
Video Link for Electron
Configurations Rows 1-3
 https://www.youtube.com/watch?v=sD3RZpwmtCs
In Educreations OR
MetaMojiAPP….
 Write the electron configuration AND draw the
electron dot for:
Cl
Ca
N
Si
Electron Configurations (Rows 4-5)




On these 2 rows, you encounter the d sublevel
The d sublevel is always minus 1 from the row it’s on
For example, row 4 contains 3d and row 5 contains 4d
The Lewis dot symbol will only contain the valence s
and p electrons
Ex:
Calcium (Ca) 1s2 2s2 2p6 3s2 3p6 4s2
Iron (Fe) 1s2 2s2 2p6 3s2 3p6 4s2 3d6
Copper (Cu) 1s2 2s2 2p6 3s2 3p6 4s2 3d9
Bromine (Br) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
Video Link for electron
configurations (rows 4-5)
https://www.youtube.com/watch?v=r85UHiMcVEU
You try (configurations & dots)……
Rubidium (Rb)
Silver (Ag)
Tin (Sn)
Antimony (Sb)
Electron Configurations (Rows 6 & 7)




On these rows you first encounter the f sublevel.
The f sublevel is always minus 2 from the row it’s on.
For example: row 6 contains 4f, and row 7 contains 5f
The Lewis dot symbol will only contain the valence s
and p electrons
Ex:
Europium (Eu) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6
6s2 4f7
Tungsten (W)
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4
Radon (Rn) 1s2 2s2 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14
5d10 6p6
Californium (Cf) 1s2 2s2 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6
6s2 4f14 5d10 6p6 7s2 5f 10
You try….. (configurations & dots)
Mercury (Hg)
Curium (Cm)
Rutherfordium (Rf)
Abbreviated Configurations
 Uses the previous noble gas written in brackets
and the configuration that is only part of the row it is
on
 This eliminates you from having to start all the way
back at 1s
 Ex:
Ca (Ar) 4s2
Ag ( Kr) 5s2 4d10