Download
valence electrons and oxidation numbers n.
Skip this Video
Loading SlideShow in 5 Seconds..
Valence Electrons and Oxidation Numbers PowerPoint Presentation
Download Presentation
Valence Electrons and Oxidation Numbers

Valence Electrons and Oxidation Numbers

283 Vues Download Presentation
Télécharger la présentation

Valence Electrons and Oxidation Numbers

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Valence Electrons and Oxidation Numbers Chemistry Dr. May

  2. Region where electron is likely to be found Nucleus  1s1 + 1 H 1 Electron Cloud Model of the Hydrogen Atom

  3. Hydrogen Gas

  4. Hydrogen Gas (H2)

  5. Hydrogen  1s1 1 +1 H+1 With SO42 gives H2SO4

  6. O O S O O H H

  7. Helium  1s2 2 0 none

  8. Region where the 2 electrons are likely to be found Nucleus  1s2 + +  4 He 2 Electron Cloud Model of the Helium Atom

  9. Lithium  2s1 1 +1 Li+1 With SO42 gives Li2SO4

  10. Region where the 2s electron is likely to be found Region where the 1s electrons are likely to be found Nucleus  1s22s1 + + +   7 Li 3 Electron Cloud Model of the Lithium Atom

  11. Beryllium  2s2 2 +2 Be+2 With SO42 gives BeSO4

  12. Berylium Electron Art

  13. The Beryllium Atom 9 Be 4 protons 4 4 electrons 1s22s2 5 neutrons

  14. Boron  2p1 3 +3 B+3 With O2 gives B2O3

  15. Carbon  2p2 4 Has 4 electrons to share Covalent CO2 and CCl4

  16. Carbon Atom Carbon Atom 12 C 6

  17. Nitrogen  2p3 5 Has 5 electrons to share Covalent NCl5 and N2O5

  18. Nitrogen An Atom

  19. Oxygen  2p4 6 2 O2 With K+1 gives K2O

  20. electrons nucleus • • • • • • • • Oxygen atom

  21. Fluorine  2p5 7 1 F1 With K+1 gives KF

  22. Neon  2p6 8 0 none

  23. Sodium  3s1 1 +1 With SO42 Na+1 gives Na2SO4

  24. Magnesium  3s2 2 +2 With SO42 Mg+2 gives MgSO4

  25. 2s orbital Nucleus Quantum Model Quantum Model    Mg Ne Na O F Be N He B C Li H    2p orbitals    1s22s22p1 1s22s1 1s22s2 1s2 1s1 1s22s22p3 1s22s22p5 1s22s22p2 1s22s22p63s1 1s22s22p6 1s22s22p4 1s22s22p63s2    1s orbital 3s orbital

  26. Aluminum  3p1 3 +3 With SO42 gives Al2(SO4)3 Al+3

  27. Hydrated Al+3 H2O H2O H2O Al+3 H2O H2O H2O

  28. Silicon  3p2 4 Silicon has 4 electrons to share Covalent SiO2 and SiC

  29. Phosphorus  3p3 5 Phosphorus has 5 electrons to share Covalent PCl5 and P2O5

  30. Sulfur  3p4 6 2 With Na+1 gives Na2S S2

  31. Chlorine  3p5 7 1 With Al+3 gives AlCl3 Cl1

  32. Argon  3p6 8 0 none

  33. Argon Energy level 3  Energy level 1 Energy level 2  +18 1s22s22p63s23p6 = s electrons = p electrons

  34. Potassium  4s1 1 +1 With S2 gives K2S K+1

  35. Calcium  4s2 2 +2 With SO42 gives CaSO4 Ca+2

  36. The End • This presentation was created for the benefit of our students by the Science Department at Howard High School of Technology • Please send suggestions and comments to rmay@nccvt.k12.de.us