Electron Configuration Worksheet
In the space below, write the unabbreviated electron configurations of the following
elements. Use Figure 11.23 on Pg. 381:
1)
hydrogen
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2)
lithium
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3)
sodium
________________________________________________
4)
helium
________________________________________________
5)
neon
________________________________________________
6)
argon
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7)
magnesium
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8)
carbon
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9)
silicon
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10)
manganese
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Determine what elements are denoted by the following electron configurations:
11)
1s22s22p63s23p4 ____________________
12)
1s22s22p63s23p64s23d104p65s1 ____________________
13)
[Kr] 5s24d105p3 ____________________
14)
[Xe] 6s24f145d6 ____________________
15)
[Rn] 7s25f11 ____________________
Electron Configuration Worksheet
Electron Configurations - Solutions
Note: The electron configurations in this worksheet assume that lanthanum (La)
is the first element in the 4f block and that actinium (Ac) is the first element in the
5f block. If your periodic table doesn’t agree with this, your answers for elements
near the f-orbitals may be slightly different.
1)
hydrogen
1s1
2)
lithium
1s22s1
3)
sodium
1s22s22p63s1
4)
helium
1s2
5)
neon
1s22s22p6
6)
argon
1s22s22p63s23p6
7)
magnesium 1s22s22p63s2
8)
carbon
1s22s22p2
9)
silicon
1s22s22p63s23p2
10)
manganese 1s22s22p63s23p64s23d5
11)
1s22s22p63s23p4 sulfur
12)
1s22s22p63s23p64s23d104p65s1 rubidium
13)
[Kr] 5s24d105p3 antimony
14)
[Xe] 6s24f145d6 osmium
15)
[Rn] 7s25f11 einsteinium (or maybe fermium)