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Electron Configuration, Aufbau Diagram, Abbreviated Configurations, Ions

Electron Configuration, Aufbau Diagram, Abbreviated Configurations, Ions. Objective Today I will be able to: Calculate the electron configuration for elements and ions on the periodic table Evaluation/ Assessment

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Electron Configuration, Aufbau Diagram, Abbreviated Configurations, Ions

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  1. Electron Configuration, Aufbau Diagram, Abbreviated Configurations, Ions

  2. Objective • Today I will be able to: • Calculate the electron configuration for elements and ions on the periodic table • Evaluation/ Assessment • Informal assessment – student responses when reviewing electron configuration problems. • Formal Assessment – collecting and analyzing responses to electron configuration worksheets and the exit ticket

  3. Lesson Sequence • Warm – Up • Explain: electron configurations using 3d orbitals. • Elaborate: Students will complete 19-36 on electron configuration WS with a partner • Evaluate: review the questions as a class (informal assessment) • Explain: abbreviated electron configurations • Electron Configuration Practice • Exit Ticket

  4. Warm - Up • How many electrons can each orbital hold? • s = • p = • d = • f = • Write the electron configuration for the following elements • Helium • Nitrogen • Silicon

  5. Objective • Today I will be able to: • Calculate the electron configuration for elements on the periodic table

  6. Homework • Electron Configuration Practice

  7. Agenda • Warm – Up • Study Guide • Electron Configuration Notes • Electron Configuration Stations • Electron Configuration Practice • Exit Ticket

  8. Electrons Exam Study Guide Sheet Fill in the boxes that Ms. Ose tells you to for the Electrons study guide

  9. Electron Configuration

  10. Why does 4s come before 3d? • 3d is of slightly higher energy than 4s, but 4s is further from the nucleus • It takes less energy for a 3d electron to form pairs then a 4s electron

  11. Aufbau Diagram • Instead of using the periodic table as a road map, you can use the aufbau diagram to determine the order that the electrons occupy the different energy levels • Electrons fill the lowest energy orbitals first

  12. Aufbau Diagram

  13. Complete Electron Configuration Practice Worksheet 19 - 36

  14. Electron Configuration Stations Work in pairs. Complete the right side of calculations first. Then complete the left. When you finish work on more electron configuration practice

  15. Abreviated Electron Configuration • Scientists are lazy ;) • We need a shorthand way to represent electron configuration • It would take a long time to write the configuration for elements with a lot of electrons • How do we do this? • Noble Gas Configuration

  16. Noble Gas Configuration • The last column on the periodic table is referred to as the noble gases • To write in abbreviated configuration: • Find the last noble gas within the configuration • Write the symbol • Write the remaining configuration • Example • Ca - 1s2 2s2 2p6 3s2 3p6 4s2 • Noble Gas Configuration = [Ar] 4s2

  17. Noble Gas Configuration • Writing Noble Gas Configurations for ions is a little bit different • Must account for an electron being gained or lost • Chlorine Ion = Cl-1 • [Ne] 3s2 3p6 • Sodium Ion = Na+1 • [He] 2s2 2p6

  18. Electron Configuration Practice Complete the practice. If you have questions, ask Ms. Ose for help

  19. To the back of the worksheet add the following problems: • Write the electron configuration for the following ions: • Mg2+ • N3- • Ag+

  20. Exit Ticket • What is wrong with the following configurations? • Al – 1s22s22p63s3 • Ti – 1s22s22p63s22p64s24d2 • Revisit the Blue Electron Exam Study Guide and Complete the boxes covered in class today

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