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=FvSinxeYWsA

You try……As He

Kr Al

Sr Br

Ra Cs

Pb

PRACTICE PROBLEMSDraw the electron dot symbols for:1. Na2. P3. Ar4. S5. Mg6. He

Activity—Periodic PyramidColor 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 & SublevelsElectrons 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 1-3Show the electron arrangement within the electron cloud

on certain energy levels and sublevelsEx: 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)NitrogenFluorine

Sodium

Phosphorus

You try….. (configurations & dots)ArgonSulfurAluminummagnesium

Video Link for Electron Configurations Rows 1-3https://

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 sublevelThe d sublevel is always minus 1 from the row it’s onFor example, row 4 contains 3d and row 5 contains

4dThe Lewis dot symbol will only contain the valence s

and p electronsEx: 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 5fThe Lewis dot symbol will only contain the valence s

and p electronsEx: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 10You try….. (configurations & dots)Mercury (Hg)Curium (Cm)Rutherfordium (Rf)

Abbreviated ConfigurationsUses 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) 4s2Ag ( Kr) 5s2 4d10