Periodic Table And Electron Configuration Worksheet With Answers
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1
2Name
_ _______________________________________
P d
_ ___
D ate
_ ________________________
A nswers
Periodic
T able
&
E lectron
C onfiguration
W orksheet
Use
t he
p eriodic
t able
a nd
t he
s teps
b elow
t o
d etermine
e lectron
c onfiguration
o f
t he
e lements
b elow
u sing
noble
g as
n otation.
Step
#
Process
Example
1
Find
t he
e lement
o n
t he
p eriodic
t able.
bromine
2
Find
t he
n oble
g as
t hat
c omes
b efore
t he
e lement.
argon
3
Determine
w hich
p eriod
t he
e lement
i s
i n.
period
4
2
10
4
[Ar]
4 s
3 d
Write
t he
e lectron
c onfiguration
u sing
n oble
g as
n otation.
S tart
with
t he
n oble
g as
i n
b rackets
a nd
t hen
l ist
t he
e nergy
s ublevels
(main
e nergy
l evel
a nd
o rbital
b lock)
t hat
a re
f illed
u p
a s
y ou
m ove
to
t he
r ight
t oward
t he
e lement.
Main
E nergy
L evel:
f or
t he
s -‐block
a nd
p -‐block
,
n
=
p eriod
# ;
for
t he
d -‐bock,
n
=
p eriod
#
-‐
1 ;
a nd
f or
t he
f -‐block,
n
=
p eriod
#
-‐
2 .
th
5
When
y ou
g et
t o
t he
b lock
t hat
t he
e lement
i s
i n,
c ount
h ow
f ar
bromine
i s
t he
5
into
t he
b lock
t he
e lement
i s.
T his
w ill
b e
t he
n umber
o f
e lectrons
element
i n
t he
p -‐block,
in
t he
l ast
s ublevel.
2
10
5
[Ar]
4 s
3 d
4 p
1
1
[He] 2s
[Ar] 4s
1. Lithium
9. Potassium
2
2
2
2
[He] 2s
2p
[Ar] 4s
3d
2. Carbon
10. Titanium
2
4
2
4
[He] 2s
2p
[Ar] 4s
3d
3. Oxygen
11. Chromium
2
5
2
6
[He] 2s
2p
[Ar] 4s
3d
4. Neon
12. Iron
2
2
8
[ Ne] 3s
[Ar] 4s
3d
5. Magnesium
13. Nickel
2
1
2
10
[Ne] 3s
3p
[Ar] 4s
3d
6. Aluminum
14. Zinc
2
3
2
10
2
[ Ne] 3s
3p
[ Ar] 4s
3d
4p
15. Germanium
7. Phosphorous
2
10
4
[Ar] 4s
3d
4p
2
5
16. Selenium
[Ne] 3s
3p
8. Chlorine
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