Orbital Notation Worksheet
Name ______________________________________Date_____________________Per_________
Practice 1: Electron Configurations
For each of the following write the complete electron configuration:
Ex. Al =1s22s22p63s23p1
1) O - 1s22s22p4
2) Mg - 1s22s22p63s2
3) Ar - 1s22s22p63s23p6
4) K - 1s22s22p63s23p64s1
5) Zn - 1s22s22p63s23p64s23d10
6) Br - 1s22s22p63s23p64s23d104p5
7) Ag - 1s22s22p63s23p64s23d104p65s14d10
8) Ra - 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s2
9) U - 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s26d15f3
For each of the following identify the element:
10) 1s22s22p63s23p64s23d104p65s24d8 - Palladium
11)1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p3 - Bismuth
12)1s22s22p63s23p64s23d1 - Scandium
13)1s22s22p63s23p64s23d104p65s24d105p66s1 - Cesium
14)1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s26d15f11 - Fermium
15)1s22s22p63s23p64s23d104p4 - Selenium
Using the periodic table answer the following questions:
16) Which Groups have an s-orbital as the last orbital? 1 and 2
17) Which Groups have a p-orbital as the last orbital? 13 - 18
18) Which Groups have a d-orbital as the last orbital? 3 - 12
19) Which section of the table is left? What is trend of f-orbital elements?
• Lanthanide and actinide
20) What is the relationship between the group number and number of valence
electrons?
• How many valance electrons
For each of the following, give only the last term of the electron configuration:
21)Be 22) Rb 23) Mo 24) Ga 25) Xe
2s2 5s1 4d5 4p1 5p6
For each of the following electron configurations, tell whether they are in an excited or ground state:
Excited state: an electron is an excited state when it gains energy
Ground state: the lowest allowable energy state of an electron
26)1s22s22p63s23p64s23d104p65s24d8 - ground
27)1s22s22p63s23p64s13d104p65s24d105p66s2 - excited
28)1s22s22p63s23p64s23d84p65s24d105p5 - excited
29)1s22s22p63s23p64s23d64p65s24d105p66s24f10 - excited
30)1s22s22p63s23p64s23d104p65s1 - ground
Give the noble gas electron configuration of the following:
31) Al: [Ne] 3s23p1
32) Kr: [Ar] 4s23d104p6
33) Ca: [Ar] 4s2
CHALLENGE: Give the orbital notation of the following:
34) H: [pic]
35) Al: [pic] [pic] [pic] [pic] [pic]
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