1 / 15

Ions + Ionic Bonding

Ions + Ionic Bonding. C hapter 15. Bonds in Proportion. Valence electrons. Valence e - the number of e - in the highest energy level How do you determine valence e - ?. Quiz yourself. How many valence e - for Li, Na, K, Rb , Cs Al Si P S Cl. Octet Rule.

norton
Télécharger la présentation

Ions + Ionic Bonding

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. Ions + Ionic Bonding Chapter 15

  2. Bonds in Proportion

  3. Valence electrons • Valence e-the number of e-in the highest energy level How do you determine valence e-?

  4. Quiz yourself • How many valence e- for • Li, Na, K, Rb, Cs • Al • Si • P • S • Cl

  5. Octet Rule • Atoms want a complete (full) outer energy level • For most that means 8 electrons • Exceptions to the rule? • H, He, Li, Be, B – they want 2 • Elements will mimic the electron configuration of a noble gas

  6. Ions • An ion is an atom with a charge • Cation is a positive ion (loses e-) • Anion is a negative ion (gains electrons) The common charge of an atom is called its OXIDATION Number

  7. Oxidation Numbers • What is the oxidation number of Na? • +1 • What is the oxidation number of F • -1 • What is the oxidation number for Mg • +2 • What is the oxidation number for Te • -2

  8. Electrostatic Attraction • A reactiveelement gains or loses e- in the presence of another element that will do the opposite • (OPPOSITES ATTRACT)

  9. Ionic Bonds How and why does sodium bond with chlorine? 1e- http://www.youtube.com/watch?v=WEUXVQ95Rvk&feature=related&safety_mode=true&persist_safety_mode=1

  10. Click for Fe + S Click for Na + Cl video

  11. More than just diatomics Can you figure these out? Mg + F Mg2+ + F- MgF2 Al + Cl Al+3 + Cl- AlCl3

  12. Swap and Drop • Write the oxidation number • Swap the positive and negative ox # and make it the subscript of the other element Ex: Mg2+ + Cl-1→ MgCl2

  13. Try these K + O K2O Al + O Al2O3 Mg + N Mg3N2

  14. Polyatomic Ions You should know these names of polyatomic ions NO3- nitrate OH- hydroxide ClO3- chlorate SO42- sulfate PO43- phosphate

  15. Try These Mg2+ + NO3- Mg(NO3)2 K+ + OH- KOH Ca2+ + PO43- Ca3(PO4)2

More Related