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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