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Shell Game

Shell Game. Sub-shells and electrons. ChemCatalyst. The two drawings show two ways of representing the electron arrangement of the element calcium, Ca. Name at least two differences. Name at least two similarities. 4p. 1s. 2p. 2s. 3d. 4s. 3p. 3s. 1. 2. 3. 4.

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Shell Game

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  1. Shell Game Sub-shells and electrons

  2. ChemCatalyst The two drawings show two ways of representing the electron arrangement of the element calcium, Ca. Name at least two differences. Name at least two similarities. 4p 1s 2p 2s 3d 4s 3p 3s 1 2 3 4 Unit 1 • Investigation III

  3. Discussion results Similarities Differences

  4. The Big Question How do electron subshells relate to the periodic table? Unit 1 • Investigation III

  5. You will be able to: Identify an element based on its electron configuration. Unit 1 • Investigation III

  6. Electron shells are divided into electron subshells. Subshells are determined by amount of electrons and energy level of those electrons Notes Unit 1 • Investigation III

  7. Reason for the configuration… Electrons groups are placed in different rows based on the amount of energy they possess Electrons can only possess certain amounts of energy and achieve even a temporary amount of stability Amount of energy correlates to position. The positions nearest the nucleus require the least energy

  8. Activity Purpose: This lesson introduces you to electron subshells. You will explore how they are related to the periodic table. (cont.) Unit 1 • Investigation III

  9. S-P-D-F S(ome) P(eople) D(on’t) F(orget) S subshells hold the fewest electrons at the lowest energy levels F subshells hold the most electrons with the highest energy levels

  10. The difference between orbitals and subshells

  11. An electron configuration is a list of all the subshells that have electrons for a given element. The number of electrons in a subshell is specified as a superscripted number. Notes Unit 1 • Investigation III

  12. Writing the electron configuration for an element The subshells are filled according to the amount of energy required for each electron 1s requires the lowest, 2s follows Partial list, 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p…

  13. 4p 1s 2p 2s 3d 4s 3p 3s 1 2 3 4

  14. Configuration for different elements Hydrogen: 1s1 Oxygen: 1s2 2s2 2p4 Aluminum: 1s2 2s2 2p6 3s2 3p1 Argon: Calcium: Chromium: Selenium:

  15. Arrow diagram for order of filling sublevels Color your copy 4 blocks where you will be adding electrons to different sub-shells, one block for each sub-shell letter (s, p, d, f)

  16. 4p 1s 2p 2s 3d 4s 3p 3s (cont.) Unit 1 • Investigation III

  17. (cont.) Unit 1 • Investigation III

  18. Another way to determine the order that subshells are filled

  19. Shorthand configuration for larger elements The configuration can shortened by writing the symbol of the nearest noble gas with a smaller atomic number: Example The configuration for Magnesium is: 1s2 2s2 2p6 3s2 Or it can be written as [Ne] 3s2

  20. In class questions

  21. (cont.) Unit 1 • Investigation III

  22. Making Sense How is the organization and structure of the periodic table related to electron subshells? (cont.) Unit 1 • Investigation III

  23. Check-In Identify the element with the following electron configuration. 1s22s22p63s23p64s23d104p3 Unit 1 • Investigation III

  24. Wrap-Up Electron shells can be divided further into subshells, referred to as; s, p, d, f. Each subshell can hold a specific maximum number of electrons. The s subshell can hold 2 electrons, the p subshell can hold 6, the d subshell can hold 10 electrons, and the f subshell can hold 14. (cont.) Unit 1 • Investigation III

  25. The periodic table can assist us in figuring out the sequence of filling the subshells with electrons. Chemists keep track of electrons and the subshells they are in by writing electron configurations. (cont.) Unit 1 • Investigation III

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