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Do Now

Do Now. Which answer represents a compound? He Br NaCl U. Which answer represents a salt? C 6 H 12 O 6 CaBr 2 Fe CH 3 COOH. Chemical Bonding, Part 2. Williamsburg High School for Architecture and Design Mr. Quinn and Ms. Tom 11/13/13. Aim. Can all atoms satisfy the Octet Rule?.

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Do Now

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  1. Do Now • Which answer represents a compound? • He • Br • NaCl • U • Which answer represents a salt? • C6H12O6 • CaBr2 • Fe • CH3COOH

  2. Chemical Bonding, Part 2 Williamsburg High School for Architecture and Design Mr. Quinn and Ms. Tom 11/13/13

  3. Aim • Can all atoms satisfy the Octet Rule?

  4. Think Back… • To the Octet Rule! • All atoms must have 8 electrons in their outer shell • What about the ones that don’t?

  5. The Rules • All elements want to look like noble gases • They can either gain or lose electrons to get there

  6. Ok, but which one? • He: 2 • Li: 2-1 • Ne: 2-8

  7. So where did the electrons go? • Ar: 2-8-8 • K: 2-8-8-1 • Kr: 2-8-18-8 • Ar: 2-8-8 • Br: 2-8-18-7 • Kr: 2-8-18-8

  8. Practice, Round 1 • Ne: 2-8 • Mg: 2-8-2 • Ar: 2-8-8 • He: 2 • O: 2-6 • Ne: 2-8

  9. Practice, Round 2 • Kr: 2-8-18-8 • Rb: 2-8-18-8-1 • Xe: 2-8-18-18-8 • Kr: 2-8-18-8 • I: 2-8-18-18-7 • Xe: 2-8-18-18-8

  10. How about some molecules? • He: 2 • C: 2-4 • Ne: 2-8 • Ne: 2-8 • Si: 2-8-4 • Ar: 2-8-8

  11. Nonmetals share electrons with other nonmetals!

  12. From Yesterday… • Stealing electrons forms a . • Sharing electrons forms a .

  13. Examples of Molecules:

  14. Regents Practice, Round 1 • Which symbol represents an atom in the ground state with the most stable valence electron configuration? • B • O • Li • Ne

  15. Regents Practice, Round 2 • Which substance contains bonds that involved the transfer of electrons from one atom to another? • CO2 • NH3 • KBr • Cl2

  16. Regents Practice, Round 3 • When sodium and fluorine combine to produce the compound NaF, the ions formed have the same electron configuration as atoms of • argon, only • neon, only • both argon and neon • neither argon nor neon

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