1 / 14

Electron Configurations and Orbital Diagrams

Electron Configurations and Orbital Diagrams. Maximum Number of Electrons In Each Sublevel. Maximum Number of Electrons In Each Sublevel. Maximum Number Sublevel Number of Orbitals of Electrons. s 1 2 p 3 6 d 5 10

benjy
Télécharger la présentation

Electron Configurations and Orbital Diagrams

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. Electron ConfigurationsandOrbital Diagrams

  2. Maximum Number of Electrons In Each Sublevel Maximum Number of Electrons In Each Sublevel Maximum Number Sublevel Number of Orbitals of Electrons s 1 2 p 3 6 d 5 10 f 7 14 LeMay Jr, Beall, Robblee, Brower, Chemistry Connections to Our Changing World , 1996, page 146

  3. General Rules Aufbau Principle Electrons fill the lowest energy orbitals first. “Lazy Tenant Rule” 6d 5f 6d 7s 5f 6p 7s 5d 6p 4f 6s 5d 4f 5p 6s 4d 5p 5s 4d 4p 5s 3d 4p 4s 3d 4s 3p Energy 3p 3s 3s 2p 2p 2s 2s 1s 1s Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

  4. Order in which subshells are filled with electrons 1s 2s 3s 4s 5s 6s 7s 2p 3p 4p 5p 6p 3d 4d 5d 6d 4f 5f 2 2 6 2 6 2 10 6 2 10 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d …

  5. Energy Level Diagram of a Many-Electron Atom 6s 6p 5d 4f 32 5s 5p 4d 18 4s 4p 3d 18 Arbitrary Energy Scale 3s 3p 8 2s 2p 8 1s 2 NUCLEUS O’Connor, Davis, MacNab, McClellan, CHEMISTRY Experiments and Principles1982, page 177

  6. General Rules Pauli Exclusion Principle Each orbital can hold TWO electrons with opposite spins. Wolfgang Pauli Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

  7. General Rules Hund’s Rule Within a sublevel, place one electron per orbital before pairing them. “Empty Bus Seat Rule” RIGHT WRONG Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

  8. Filling Rules for Electron Orbitals Aufbau Principle: Electrons are added one at a time to the lowest energy orbitals available until all the electrons of the atom have been accounted for. Pauli Exclusion Principle: An orbital can hold a maximum of two electrons. To occupy the same orbital, two electrons must spin in opposite directions. Hund’s Rule: Electrons occupy equal-energy orbitals so that a maximum number of unpaired electrons results. *Aufbau is German for “building up”

  9. Orbital Diagram Notation 8 O 15.9994 2s 2p 1s O 8e- • Electron Configuration 1s22s22p4 Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

  10. Electron Configurations Orbital Filling Element 1s 2s 2px 2py 2pz 3s Configuration Electron H He Li C N O F Ne Na 1s1 1s2 1s22s1 1s22s22p2 1s22s22p3 1s22s22p4 1s22s22p5 1s22s22p6 1s22s22p63s1

  11. Energy Level Diagram Nitrogen 6s 6p 5d 4f Bohr Model 5s 5p 4d 4s 4p 3d Arbitrary Energy Scale 3s 3p N Hund’s Rule “maximum number of unpaired orbitals”. 2s 2p 1s Electron Configuration N = 1s22s22p3 NUCLEUS HHeLiCNAlArFFe La CLICK ON ELEMENT TO FILL IN CHARTS

  12. Energy Level Diagram N Iron 6s 6p 5d 4f Bohr Model 5s 5p 4d 4s 4p 3d Arbitrary Energy Scale 3s 3p 2s 2p 1s Electron Configuration Fe = 1s22s22p63s23p64s23d6 NUCLEUS HHeLiCNAlArFFe La CLICK ON ELEMENT TO FILL IN CHARTS

  13. Periodic Patterns 1s 2p 2s 3p 3s 4p 3d 4s 5p 5s 4d 6p 6s 5d 7p 7s 6d 4f 5f s p 1 2 3 4 5 6 7 1s d (n-1) 6 7 f (n-2)

  14. Periodic Patterns Example - Hydrogen 1st column of s-block 1st Period s-block 1s1 Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

More Related