1 / 12

Mastering Electron Configurations - Exam Preparation

Prepare for your exam by mastering electron configurations and periodic properties, including Pauli Exclusion Principle, Aufbau Principle, Hund’s Rule, and Madelung’s Rule. Understand electron filling order and configurations using periodic table blocks. Test your knowledge with practice questions.

drashid
Download Presentation

Mastering Electron Configurations - Exam Preparation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. November 4, 2009 EXAM #3 MONDAY, NOVEMBER 9TH (Chapters 6 and 7) Bring a Periodic Table to class Manners reminder Today: Finish Chapter 7 Orbital filling Periodic Properties

  2. Rules for filling orbitals • Pauli Exclusion Principle No two electrons can have the same 4 quantum numbers An orbital has a maximum of 2 electrons of opposite spin • Aufbau/Build-up Principle Lower energy levels fill before higher energy levels • Hund’s Rule Electrons only pair after all orbitals at an energy level have 1 electron • Madelung’s Rule Orbitals fill in the order of the value of n + l

  3. Madelung’s Rule= Orbital Filling Order

  4. Three Types of Notation

  5. Electron Configurations and the Periodic Table • n value increases as you move down (Li, Na, K) Li Na K

  6. Electron Configurations and the Periodic Table • Periodic Blocks & Hund’s Rule (using the p block) C O Sc N

  7. Electron Configurations and the Periodic Table • Using periodic blocks: everything is filled up to the bloakc you are in; count over to determine “how filled” the final orbital is

  8. Electron Configurations and the Periodic Table

  9. What is the electron configuration for Al? • 1s22s22p63s1 • 1s22s22p63s23p1 • 1s22s22p63s23p2 • 1s22s22p1

  10. Which element has the ground state electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d2? • K • Ca • Ti • Mn • Fe

  11. Which is the correct Noble Gas electron configuration for the element Zinc? • [Ne]3s2 3p6 4s2 3d10 • [Ne] 3s23p6 • [Ar] 3s2 3p6 4s2 3d10 • [Ar] 3d10 4s1 • [Ar]3d104s2

  12. Electron Configurations and the Periodic Table • Chromium and copper are anomalies Cr Cu

More Related