ex02 Bonding part2_wink - Announcements...

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1 Bonding: General Concepts Part 2 Dr. Deborah Walker Announcements From building atoms to building molecules! By the end of today, you should be able to: Identify a bond as covalent, polar covalent, or ionic. Explain bonding (what, when, why, how). Predict which bond is more strongly polar (has strongest dipole). Identify polar bonds and identify the partial charges. Determine which ionic compound has the stronger lattice energy. MON TUES Deb 12 1:30pm WEL 4.142 WED Deb 12 1:30pm WEL 4.142 THURS Deb 12 1:30pm WEL 4.142 FRI Seyma 11 12noon Review Ionic bonds involve the exchange of electrons from one atom to another, or Ionic bonds involve a cation bonding to an anion. Covalent bonds involve the sharing of electrons between two atoms. In all cases, bonds form because they form a lower energy state. Knowledge Check Which of the following involves a covalent bond? A. Cl 2 B. BeF 2 C. Fe 2 O 3 D. None of these. Puzzler Which of the following bonds exhibits the most covalent character? A. BF 3 B. CH 4 C. Al 2 O 3 D. HCl E. I don’t know. The Catch… Continuum Nonpolar covalent EN=0 Polar covalent Ionic EN=1.5 So, electronegativity is key to identifying bond type.
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2 Electronegativity What is electronegativity?
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This note was uploaded on 12/04/2010 for the course BIO 311 C taught by Professor Mcclelland during the Spring '09 term at University of Texas at Austin.

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ex02 Bonding part2_wink - Announcements...

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