Lecture 6.2-
e- configs & the Periodic Table
Electron configurations can be
shortened by writing the symbol
of the previous noble gas in
brackets to represent the insi...
Electron Configurations in Groups


 Elements can be sorted into noble
 gases, representative elements,
 transition metals...
Electron Configurations in Groups

Noble gases (Group 8A) have
full outer energy levels.
Usually an s2p6 configuration.
He...
Electron Configurations in Groups
Electron Configurations in Groups
The Representative Elements
Electron Configurations in Groups
The Representative Elements
 For representative elements s and p sublevels of
 the highe...
Electron Configurations in Groups
The Representative Elements
 For representative elements s and p sublevels of
 the highe...
Electron Configurations in Groups

Alkali metals (Group 1A) have one
electron in the highest occupied
energy level. s1 con...
Electron Configurations in Groups

Alkaline earth metals (Group 2A)
have two electrons in the highest
occupied energy leve...
Transition Elements

Transition Elements
  There are two types of transition
  elements—transition metals and inner
  tran...
Transition Elements
Transition Elements


In transition metals, the highest
energy electrons are found in
inner d orbitals.
Transition Elements


In transition metals, the highest
energy electrons are found in
inner d orbitals.
In atoms of an inn...
Periods

The period number tells which energy
level the outside electrons are in.
Ex. 3rd period sodium(Na) is [Ne]3s1
   ...
Blocks of Elements




Using the periodic table, write the
electron configuration of N, Ca, Ti,
Se, Cl, and He.
Filling orbitals




                   Positive
                   nucleus


                     1
                     ...
Filling orbitals




                                              H 1e-
                Positive
                nucleus ...
Filling orbitals




                                              He 2e-
                Positive
                nucleus...
Filling orbitals




                                       Helium is
               All the
             electrons       ...
Filling orbitals




                                           Li 3e-
              All the
             electrons
      ...
Filling orbitals




                             Be 4e-
  All the
 electrons
   Positive
that helium
   nucleus          ...
Filling orbitals




                 All the
                electrons
                  Positive
               that hel...
Filling orbitals




                All the
               electrons
                 Positive
              that helium
...
Filling orbitals




                All the
               electrons
                 Positive
              that helium
...
Filling orbitals




                All the
               electrons
                 Positive
              that helium
...
Filling orbitals




                All the
               electrons
                 Positive
              that helium
...
Filling orbitals




                All the
               electrons
                 Positive
              that helium
...
Filling orbitals




                                    Neon is
           Neon’s ten               a noble gas
         ...
Filling orbitals




           Neon’s
              ten
            Positive
            nucleus
          electrons
    ...
Filling orbitals




           Neon’s
              ten
            Positive
            nucleus
          electrons
    ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




               Neon’s
                  ten
                Positive
                nucleus
        ...
Filling orbitals




                                    Argon is
             Argon’s                a noble gas
        ...
Filling orbitals




          Argon’s
            Positive
              18
            nucleus

          electrons
    ...
Filling orbitals




          Argon’s
            Positive
              18
            nucleus

          electrons
    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




                                          Transition
                                          metals...
Filling orbitals




                                          Transition
                                          metals...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




               Argon’s
                 Positive
                   18
                 nucleus

    ...
Filling orbitals




                                           Krypton is
                                           a no...
Filling orbitals




                                       Krypton is
                                       a noble
    ...
And so on and so forth……
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Lecture 6.2- Electron Configurations & the Periodic Table

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  • This diagram classifies elements into blocks according to sublevels that are filled or filling with electrons. Interpreting Diagrams In the highest occupied energy level of a halogen atom, how many electrons are in the p sublevel?
  • Lecture 6.2- Electron Configurations & the Periodic Table

    1. 1. Lecture 6.2- e- configs & the Periodic Table
    2. 2. Electron configurations can be shortened by writing the symbol of the previous noble gas in brackets to represent the inside electrons. Shortened 1s2 [He]2s22p6 [Ne]3s23p6 [Ar]4s24p6
    3. 3. Electron Configurations in Groups Elements can be sorted into noble gases, representative elements, transition metals, or inner transition metals based on their electron configurations.
    4. 4. Electron Configurations in Groups Noble gases (Group 8A) have full outer energy levels. Usually an s2p6 configuration. Helium is full with s2
    5. 5. Electron Configurations in Groups
    6. 6. Electron Configurations in Groups The Representative Elements
    7. 7. Electron Configurations in Groups The Representative Elements For representative elements s and p sublevels of the highest occupied energy level are not filled.
    8. 8. Electron Configurations in Groups The Representative Elements For representative elements s and p sublevels of the highest occupied energy level are not filled. The group number equals the number of electrons in the highest/outermost energy level.
    9. 9. Electron Configurations in Groups Alkali metals (Group 1A) have one electron in the highest occupied energy level. s1 configuration
    10. 10. Electron Configurations in Groups Alkaline earth metals (Group 2A) have two electrons in the highest occupied energy level. s2 Halogens(Group 7A) have an s2p5 configuration.
    11. 11. Transition Elements Transition Elements There are two types of transition elements—transition metals and inner transition metals. They are classified based on their electron configurations.
    12. 12. Transition Elements
    13. 13. Transition Elements In transition metals, the highest energy electrons are found in inner d orbitals.
    14. 14. Transition Elements In transition metals, the highest energy electrons are found in inner d orbitals. In atoms of an inner transition metal, the highest occupied s sublevel and an inner f sublevel contain electrons.
    15. 15. Periods The period number tells which energy level the outside electrons are in. Ex. 3rd period sodium(Na) is [Ne]3s1 4th period potassium(K) is [Ar]4s1
    16. 16. Blocks of Elements Using the periodic table, write the electron configuration of N, Ca, Ti, Se, Cl, and He.
    17. 17. Filling orbitals Positive nucleus 1 2 3 4 The red circles represent energy levels
    18. 18. Filling orbitals H 1e- Positive nucleus 1s1 1 2 3 4 The red circles represent energy levels
    19. 19. Filling orbitals He 2e- Positive nucleus 1s2 1 The first 2 energy 3 level is full 4 The red circles represent energy levels
    20. 20. Filling orbitals Helium is All the electrons a noble gas Positive that helium nucleus has 1s2 = [He] 1 2 3 4 The red circles represent energy levels
    21. 21. Filling orbitals Li 3e- All the electrons Positive that helium nucleus 1s2 2s1 has or [He] 2s1 1 2 3 4 The red circles represent energy levels
    22. 22. Filling orbitals Be 4e- All the electrons Positive that helium nucleus 1s2 2s2 has or [He] 2s2 1 2 3 4
    23. 23. Filling orbitals All the electrons Positive that helium nucleus has 1 2 B 5e- 3 4 [He] 2s2 2p1
    24. 24. Filling orbitals All the electrons Positive that helium nucleus has 1 2 C 6e- 3 4 [He]2s2 2p2
    25. 25. Filling orbitals All the electrons Positive that helium nucleus has 1 2 N 7e- 3 4 [He]2s2 2p3
    26. 26. Filling orbitals All the electrons Positive that helium nucleus has 1 2 O 8e- 3 4 [He]2s2 2p4
    27. 27. Filling orbitals All the electrons Positive that helium nucleus has 1 2 F 9e- 3 4 [He]2s2 2p5
    28. 28. Filling orbitals All the electrons Positive that helium nucleus has 1 2 Ne 10e- 3 4 [He]2s2 2p6 2nd energy level is full!
    29. 29. Filling orbitals Neon is Neon’s ten a noble gas Positive electrons nucleus 1 2 Ne 10e- 3 4 [He]2s2 2p6 = [Ne]
    30. 30. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Na 11e- 3 4 [Ne]3s1
    31. 31. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Mg 12e- 3 4 [Ne]3s2
    32. 32. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Al 13e- 3 4 [Ne]3s2 3p1
    33. 33. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Si 14e- 3 4 [Ne]3s2 3p2
    34. 34. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 P 15e- 3 4 [Ne]3s2 3p3
    35. 35. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 S 16e- 3 4 [Ne]3s2 3p4
    36. 36. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Cl 17e- 3 4 [Ne]3s2 3p5
    37. 37. Filling orbitals Neon’s ten Positive nucleus electrons 1 2 Ar 18e- 3 4 [Ne]3s2 3p6
    38. 38. Filling orbitals Argon is Argon’s a noble gas Positive 18 nucleus electrons 1 2 Ar 18e- 3 4 [Ne]3s2 3p6 = [Ar]
    39. 39. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 K 19e- 3 4 [Ar]4s1
    40. 40. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Ca 20e- 3 4 [Ar]4s2
    41. 41. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Sc 21e- 3 4 [Ar] 3d1 4s2
    42. 42. Filling orbitals Transition metals have their Argon’s highest Positive 18 nucleus energy electrons electrons 1 in inner d 2 orbitals Sc 21e- 3 4 [Ar] 3d1 4s2
    43. 43. Filling orbitals Transition metals have their Argon’s highest Positive 18 nucleus energy electrons electrons 1 in inner d 2 orbitals Ti 22e- 3 4 [Ar] 3d2 4s2
    44. 44. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 V 23e- 3 4 [Ar] 3d3 4s2
    45. 45. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Cr 24e- 3 4 [Ar] 3d4 4s2
    46. 46. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Mn 25e- 3 4 [Ar] 3d5 4s2
    47. 47. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Fe 26e- 3 4 [Ar] 3d6 4s2
    48. 48. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Co 27e- 3 4 [Ar] 3d7 4s2
    49. 49. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Ni 28e- 3 4 [Ar] 3d8 4s2
    50. 50. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Cu 29e- 3 4 [Ar] 3d9 4s2
    51. 51. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Zn 30e- 3 4 [Ar] 3d10 4s2 The 3rd energy level is full!
    52. 52. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Ga 31e- 3 4 [Ar] 3d10 4s2 4p1
    53. 53. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Ge 32e- 3 4 [Ar] 3d10 4s2 4p2
    54. 54. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 As 33e- 3 4 [Ar] 3d10 4s2 4p3
    55. 55. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Se 34e- 3 4 [Ar] 3d10 4s2 4p4
    56. 56. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Br 35e- 3 4 [Ar] 3d10 4s2 4p5
    57. 57. Filling orbitals Argon’s Positive 18 nucleus electrons 1 2 Kr 36e- 3 4 [Ar] 3d10 4s2 4p6
    58. 58. Filling orbitals Krypton is a noble gas krypton’s Positive 36 nucleus electrons 1 2 3 Kr 36e- 4 5 [Ar]3d104s24p6 = [Kr]
    59. 59. Filling orbitals Krypton is a noble gas krypton’s Positive 36 nucleus electrons 1 2 3 Rb 37e- 4 5 [Kr] 5s1
    60. 60. And so on and so forth……

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