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Atomic Structure Preparing for Bonding

Atomic Structure Preparing for Bonding. Douglas J. Burks BIO231 Wilmington College. Basics. Three subatomic Particles 1. Proton A. Mass: ~ 1 AMU B. Charge: +1 C. Location: Nucleus 2. Neutron A. Mass: ~1 AMU B. Charge: no net charge C. Location Nucleus 3. Electron

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Atomic Structure Preparing for Bonding

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  1. Atomic StructurePreparing for Bonding Douglas J. Burks BIO231 Wilmington College

  2. Basics • Three subatomic Particles • 1. Proton • A. Mass: ~ 1 AMU • B. Charge: +1 • C. Location: Nucleus • 2. Neutron • A. Mass: ~1 AMU • B. Charge: no net charge • C. Location Nucleus • 3. Electron • A. Mass: very small • B. Charge -1 • C. Location: in “orbits” • Opposite charge particles attract • Like charged particles repel • Systems want net neutrality • All systems want to be in lowest energy (most stable) http://education.jlab.org/qa/atom_model_02.gif

  3. Electron Cloud • Property of Electron • With little mass • Dual behavior • Particle • Wave • Probability • 3 wave functions http://www.beyondbooks.com/psc92/images/00080041.jpg

  4. Shells and orbitals • Shell http://www.chem.duke.edu/~bonk/Chem83/enotes/ElectAndAtoms01.gif

  5. Shells and Orbitals

  6. Basics • Periodic Table s p s p p p p p d d d d d d d d d d f f f f f f f f f f f f f f

  7. Electron Filling • Rules • Lowest energy • No net charge • One electron per possible wave solution • Shell, orbital spin (two per orbital) • s (1 per shell) = 2 electrons • p (3 per shell) = 6 electrons • d (5 per shell) = 10 electrons • f (7 per shell) = 14 electrons • Shells • 1 has only s • 2 has only s and p • 3 has only s, p and d • 4 has s, p, d, and f • 5 has s, p, d, and f

  8. http://www.webelements.com/webelements/properties/media/tables/balls/atomic-radius-emp.gifhttp://www.webelements.com/webelements/properties/media/tables/balls/atomic-radius-emp.gif

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