Chemistry 143 Electron Configurations Dr. Caddell Electron Configurations Key.pdfChemistry 143...
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Chemistry 143 Electron Configurations Dr. Caddell Electron Configurations Write the complete (expanded) electron configurations and core (noble gas) electron configurations for the following elements. Use only the periodic table supplied for reference. Group 1(1A) – Alkali Metals Element Expanded Electron Configuration Core Notation H 1s 1 Not for this one Li 1s 2 2s 1 [He]2s 1 Na 1s 2 2s 2 2p 6 3s 1 [Ne]3s 1 K 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 [Ar]4s 1 Rb 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 1 [Kr]5s 1 Cs 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 1 [Xe]6s 1 Fr 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 6 7s 1 [Rn]7s 1 1 of 8
Transcript of Chemistry 143 Electron Configurations Dr. Caddell Electron Configurations Key.pdfChemistry 143...
Chemistry 143 Electron Configurations Dr. Caddell
Electron ConfigurationsWrite the complete (expanded) electron configurations and core (noblegas) electron configurations for the following elements. Use only the periodic table supplied for reference.
Group 1(1A) – Alkali Metals
Element Expanded Electron Configuration Core Notation
H 1s1 Not for thisone
Li 1s22s1 [He]2s1
Na 1s22s22p63s1 [Ne]3s1
K 1s22s22p63s23p64s1 [Ar]4s1
Rb 1s22s22p63s23p64s23d104p65s1 [Kr]5s1
Cs 1s22s22p63s23p64s23d104p65s24d105p66s1 [Xe]6s1
Fr 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s1 [Rn]7s1
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Chemistry 143 Electron Configurations Dr. Caddell
Group 2(2A) – Alkaline Earth Metals
Element Expanded Electron Configuration Core Notation
Be 1s22s2 [He]2s2
Mg 1s22s22p63s2 [Ne]3s2
Ca 1s22s22p63s23p64s2 [Ar]4s2
Sr 1s22s22p63s23p64s23d104p65s2 [Kr]5s2
Ba 1s22s22p63s23p64s23d104p65s24d105p66s2 [Xe]6s2
Ra 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s2 [Rn]7s2
Group 13(3A)
Element Expanded Electron Configuration Core Notation
B 1s22s22p1 [He]2s22p1
Al 1s22s22p63s23p1 [Ne]3s23p1
Ga 1s22s22p63s23p64s23d104p1 [Ar]4s23d104p1
In 1s22s22p63s23p64s23d104p65s24d105p1 [Kr]5s24d105p1
Tl 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p1 [Xe]6s24f145d106p1
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Chemistry 143 Electron Configurations Dr. Caddell
Group 14(4A)
Element Expanded Electron Configuration Core Notation
C 1s22s22p2 [He]2s22p2
Si 1s22s22p63s23p2 [Ne]3s23p2
Ge 1s22s22p63s23p64s23d104p2 [Ar]4s23d104p2
Sn 1s22s22p63s23p64s23d104p65s24d105p2 [Kr]5s24d105p2
Pb 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2 [Xe]6s24f145d106p2
Group 15 (5A)
Element Expanded Electron Configuration Core Notation
N 1s22s22p3 [He]2s22p3
P 1s22s22p63s23p3 [Ne]3s23p3
As 1s22s22p63s23p64s23d104p3 [Ar]4s23d104p3
Sb 1s22s22p63s23p64s23d104p65s24d105p3 [Kr]5s24d105p3
Bi 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p3 [Xe]6s24f145d106p3
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Chemistry 143 Electron Configurations Dr. Caddell
Group 16 (6A)
Element Expanded Electron Configuration Core Notation
O 1s22s22p4 [He]2s22p4
S 1s22s22p63s23p4 [Ne]3s23p4
Se 1s22s22p63s23p64s23d104p4 [Ar]4s23d104p4
Te 1s22s22p63s23p64s23d104p65s24d105p4 [Kr]5s24d105p4
Po 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p4 [Xe]6s24f145d106p4
Group 17(7A) Halogens
Element Expanded Electron Configuration Core Notation
F 1s22s22p5 [He]2s22p5
Cl 1s22s22p63s23p5 [Ne]3s23p5
Br 1s22s22p63s23p64s23d104p5 [Ar]4s23d104p5
I 1s22s22p63s23p64s23d104p65s24d105p5 [Kr]5s24d105p5
At 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p5 [Xe]6s24f145d106p5
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Chemistry 143 Electron Configurations Dr. Caddell
Group 18(8A) – Noble Gases
Element Expanded Electron Configuration Core Notation
He 1s2 Not for this one
Ne 1s22s22p6 [He]2s22p6
Ar 1s22s22p63s23p6 [Ne]3s23p6
Kr 1s22s22p63s23p64s23d104p6 [Ar]4s23d104p6
Xe 1s22s22p63s23p64s23d104p65s24d105p6 [Kr]5s24d105p6
Rn 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p6 [Xe]6s24f145d106p6
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Chemistry 143 Electron Configurations Dr. Caddell
Period 4 Transition Elements
Element Expanded Electron Configuration Core Notation
Sc 1s22s22p63s23p64s23d1 [Ar]4s23d1
Ti 1s22s22p63s23p64s23d2 [Ar]4s23d2
V 1s22s22p63s23p64s23d3 [Ar]4s23d3
Cr 1s22s22p63s23p64s13d5 [Ar]4s13d5
Mn 1s22s22p63s23p64s23d5 [Ar]4s23d5
Fe 1s22s22p63s23p64s23d6 [Ar]4s23d6
Co 1s22s22p63s23p64s23d7 [Ar]4s23d7
Ni 1s22s22p63s23p64s23d8 [Ar]4s23d8
Cu 1s22s22p63s23p64s13d10 [Ar]4s13d10
Zn 1s22s22p63s23p64s23d10 [Ar]4s23d10
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Chemistry 143 Electron Configurations Dr. Caddell
Period 5 Transition Elements
Element Expanded Electron Configuration Core Notation
Y 1s22s22p63s23p64s23d104p65s24d1 [Kr]5s24d1
Zr 1s22s22p63s23p64s23d104p65s24d2 [Kr]5s24d2
Nb* 1s22s22p63s23p64s23d104p65s14d4 [Kr]5s14d4
Nb# 1s22s22p63s23p64s23d104p65s24d3 [Kr]5s24d3
Mo* 1s22s22p63s23p64s23d104p65s14d5 [Kr]5s14d5
Mo# 1s22s22p63s23p64s23d104p65s24d4 [Kr]5s24d4
Tc* 1s22s22p63s23p64s23d104p65s14d6 [Kr]5s14d6
Tc# 1s22s22p63s23p64s23d104p65s24d5 [Kr]5s24d5
Ru* 1s22s22p63s23p64s23d104p65s14d7 [Kr]5s14d7
Ru# 1s22s22p63s23p64s23d104p65s24d6 [Kr]5s24d6
Rh* 1s22s22p63s23p64s23d104p65s14d8 [Kr]5s14d8
Rh# 1s22s22p63s23p64s23d104p65s24d7 [Kr]5s24d7
Pd* 1s22s22p63s23p64s23d104p64d10 [Kr]4d10
Pd# 1s22s22p63s23p64s23d104p65s24d8 [Kr]5s24d8
Ag* 1s22s22p63s23p64s23d104p65s14d10 [Kr]5s14d10
Ag# 1s22s22p63s23p64s23d104p65s24d9 [Kr]5s24d9
Cd 1s22s22p63s23p64s23d104p65s24d10 [Kr]5s24d10
* These are exceptions which you do not need to memorize.# Use these instead
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Chemistry 143 Electron Configurations Dr. Caddell
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