1. Chemical Behavior of Families and Electron Configurations
Link to Alkali metals
Alkali metals and chlorine
Link AE metals
Chemical Behavior of Families and Electron Configurations
Link to Halogen video
Link to noble gases

2. 2 7 8 1 +1 +2 -1 1 2 1 Alkaline Earth Metals Halogens Alkali Metals
Group 1
Group 2
Group 7
Group 8
Name:
Li:
Be: F:
Ne:
Na:
Mg:
Cl:
Ar: K:
Ca:
Br:
Kr:
# of Valence e-
Gain or Lose e-
Ion Formed:
Alkaline Earth Metals
Halogens
Alkali Metals
Noble Gases
[He]2s1
[He]2s2
[He]2s22p5
[He]2s22p6
[Ne]3s1
[Ne]3s2
[Ne]3s23p5
[Ne]3s23p6
[Ar]4s1
[Ar]4s2
[Ar]4s23d104p5
[Ar]4s23d104p6 2 7 8 1 1 2 1 +1 +2 -1

3. HW 8-9 Questions
1) Which families’ elements are unreactive because they have a completely filled valence electron level (ns2np6)?
ANS: Noble Gases

4. HW 8-9, #2
2) If their valence electron configurations are not filled atoms will react chemically by either
, , or sharing valence electrons to obtain a completely valence electron level.
GAINING
LOSING
FILLED

5. Valence electrons are the _____________ energy level _____ and _____ electrons.
Valence electrons determine ____________ __________!
Note how the metals (group ____ and ____) lose electrons to reach noble gas configuration _________; nonmetal (group ___) gain electron to reach __________.
outermost s p
chemical
behavior I II
s2p6
VII
s2p6

6. A completely filled valence level ( ) is chemically ______________!
Elements in the same vertical column (____________ or ___________) have the same electron configurations, and therefore, the same _____________ ____________.
s2p6
inert
family
group
chemical
behavior