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Catalyst

Catalyst. Draw the Lewis Dot Structure for Fluorine (F ) Boron (B ) Magnesium (Mg ) (Remember, find the number of valence electrons.). Today’s Agenda. REVIEW…. All atoms bond together to get to ______ valence electrons Valence electrons are predicted by the group number Group 1 = 1

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Catalyst

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  1. Catalyst • Draw the Lewis Dot Structure for • Fluorine (F) • Boron (B) • Magnesium (Mg) • (Remember, find the number of valence electrons.)

  2. Today’s Agenda

  3. REVIEW… • All atoms bond together to get to ______ valence electrons • Valence electrons are predicted by the group number • Group 1 = 1 • Group 2 = 2 • Group 13 = 3 • Etc………… • Lewis Dot Structures show the number of valence electrons • Valence electrons are the only ones involved in bonding • Covalent bonds are ones where atoms share their electrons

  4. BY THE END OF TODAY… Other than taking electrons from another atom (in ionic bonds), atoms can come together and SHARE electrons to get to that magic number 8.

  5. Lewis Dot Structures • Lewis Dot Structures for compounds: all atoms want 8 electrons according to the Octet Rule • (Except H and He!) • They can get these by sharing electrons with one another

  6. THIS IS HOW WE DO IT!!!

  7. Single Bonds • Single covalent bond: one pair of shared electrons (two electrons) • Atoms may be the same • H2, F2, Cl2, Br2, I2, O2 • Atoms may be different • HF, HCl, HBr, HI =

  8. Formation of Single Covalent Bonds Examples H2 F2 HCl

  9. Your Turn! (Almost) • Whiteboards • Please don’t waste markers (no drawing pictures or writing irrelevant things) • Please pick up after yourself

  10. Formation of Single Covalent Bonds Your Turn! 1. Cl2 2. HBr

  11. Formation of Multiple Single Bonds Examples NH3 SeCl2

  12. Formation of Multiple Single Bonds Your Turn! NF3 CH4 CH3Cl

  13. Today’s Agenda

  14. Draw the Lewis Dot Structures for the covalent compounds to the right  Br2 HI PH3 H2S CCl4 Practice Time!

  15. Today’s Agenda

  16. Exit Slip • 1. Draw the Lewis Dot Structure for Cl2 • 2. True or false: There are no exceptions to the Octet Rule 3. Draw the Lewis Dot Structure for HBr 4. Draw the Lewis Dot Structure for NH3

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