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Ionic Bonding – Criss -Cross Method

Ionic Bonding – Criss -Cross Method. 11/22/13 Chemistry. Drill. Draw electron dot structures for each element. What charge do they typically have? H Ca Ne Zn (take a guess on the charge) U (take a guess on the charge) He C S. Objectives. SWBAT

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Ionic Bonding – Criss -Cross Method

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  1. Ionic Bonding – Criss-Cross Method 11/22/13 Chemistry

  2. Drill • Draw electron dot structures for each element. What charge do they typically have? • H • Ca • Ne • Zn (take a guess on the charge) • U (take a guess on the charge) • He • C • S

  3. Objectives • SWBAT • Determine the number of valence electrons for any atom, using the Periodic Table. • Illustrate atoms and ions using electron dot notation. • Describe how atoms can transfer electrons to create a bond. • Homework • 7-1 Review & Reinforcement WS except #23-26 • Due 12/11

  4. Criss-Cross Basics • Cross the numbers and drop the charges • Don’t write “1” • Reduce the ratio – 2:2  1:1, 2:4  1:2 • Monatomic Ions Worksheet • Criss cross and name

  5. Steps for Showing Ionic Bonds • Determine the charge on each atom. • Criss-cross to get the formula. • Create a Lewis structure that matches the formula. • Name the compound. • Bonding Practice • Criss cross, draw Lewis structures, and name

  6. Closure • Criss cross and make a Lewis structure for • Ca and Cl

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