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Group #2, Period 4

11.4 Electrons Configurations & Atomic Properties. Group #2, Period 4. URL: http://61.19.145.8/student/m5year2006-2/502/group11/periodic_table.gif. Electron Configuration & Atomic Properties. URL: http://www.mikeblaber.org/oldwine/chm1045/notes/Struct/EPeriod/IMG00011.GIF.

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Group #2, Period 4

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  1. 11.4 Electrons Configurations & Atomic Properties Group #2, Period 4 URL: http://61.19.145.8/student/m5year2006-2/502/group11/periodic_table.gif

  2. Electron Configuration & Atomic Properties URL: http://www.mikeblaber.org/oldwine/chm1045/notes/Struct/EPeriod/IMG00011.GIF URL: http://www.shodor.org/chemviz/ionization/students/eatable.gif

  3. Orbital Diagrams • Orbital's are represented by boxes grouped by sublevel w/ small arrows indicating the electrons • Arrows always have to be pointing opposite directions because of opposite spins • Arrows based on maximum of electrons in the orbital Ex. Draw the Orbital Diagram for Argon 1s2 2s2 2p6 3s2 3p6

  4. Orbital Diagrams URL:http://4.bp.blogspot.com/_rsMi692zTnE/SIisLUXo6tI/AAAAAAAAAFE/DTuIffl_TKY/s320/orbitaldiagram.JPG

  5. Electron Configuration Example: Manganese 1s2 2s2 2p6 3s2 3p6 3d5 Electron arrangement s, p, d, f – type (shape) of orbital N= principal energy level; Z= # of electrons in orbital URL:http://www.btinternet.com/~melee3d/revision/chemistry/images/e-config.png

  6. URL:http://www.ourmetals.com/images/periodic/structure.jpg

  7. Valence Electrons Ex: How many valence electron does Barium have ? Answer: 7 valence electrons • Electrons in the outermost (highest) principal energy. • Element with the same valence electron arrangement show similar chemical behavior. URL:http://theodoregray.com/periodictable/Tiles/056/s7.JPG

  8. Example of Valence Electrons in element URL:http://hyperphysics.phyastr.gsu.edu/Hbase/solids/imgsol/valen.gif

  9. Atomic Size Ex: Which element has a larger atomic radius? Why? Niobium or Xenon? Answer: Niobium, because it is more on the left side of the periodic table. • Atomic size decreases from left to right • Atomic size increases from up and down • It depends on the number of electrons that will increase the elements’ volume

  10. Periodicity of Atomic Size URL:www.grandinetti.org/Teaching/Chem121/Lectures/AtomicRadii/assets/radiitable.gif

  11. Ionization Energy Example: Which has more ionization energy? Why? Helium or Radon? Answer: Helium would have more ionization energy because it takes more energy to remove electrons from an element if you go across a period and up a group. Energy require to remove an electron from an individual atom (gas). Metals have relatively low ionization energies. Nonmetals tend to have gain not lose electrons.

  12. URL:http://faculty.colostate-pueblo.edu/linda.wilkes/111/3c.14.gifURL:http://faculty.colostate-pueblo.edu/linda.wilkes/111/3c.14.gif

  13. Review Time! Questions: • Draw an orbital diagram for the given element..Sodium • Write the electron configuration for oxygen. • How many valence electrons does the given element have?Thallium • Which element has a larger atomic radius? Explain.Indium or Tin • Which element contains more ionization energy? Explain.Krypton or Hassium Answers: 1. 1s 2s 2p 3s 2. [He] 2s2 2p4 3. Three valence electrons 4. Indium, it is one more to the left side of the periodic table. 5. Krypton, it is closer to the right of the periodic table.

  14. http://www.mikeblaber.org/oldwine/chm1045/notes/Struct/EPeriod/IMG00011.GIFhttp://www.mikeblaber.org/oldwine/chm1045/notes/Struct/EPeriod/IMG00011.GIF • http://61.19.145.8/student/m5year2006-2/502/group11/periodic_table.gif • http://www.shodor.org/chemviz/ionization/students/eatable.gif • http://4.bp.blogspot.com/_rsMi692zTnE/SIisLUXo6tI/AAAAAAAAAFE/DTuIffl_TKY/s320/orbitaldiagram.JPG • http://www.btinternet.com/~melee3d/revision/chemistry/images/e-config.png • http://www.ourmetals.com/images/periodic/structure.jpg • http://theodoregray.com/periodictable/Tiles/056/s7.JPG • http://hyperphysics.phyastr.gsu.edu/Hbase/solids/imgsol/valen.gif • www.grandinetti.org/Teaching/Chem121/Lectures/AtomicRadii/assets/radiitable.gif • http://faculty.colostate-pueblo.edu/linda.wilkes/111/3c.14.gif LINKS!

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