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Chapter 6

Chapter 6. Chemical Bonding. Ionic Bond. Ionic bond- attraction of cation and anion forms bond Left and right side of periodic table To name, change the ending of the anion into –ide Examples of names, formulas on board. Covalent bond. Covalent bond- sharing of electron pairs

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Chapter 6

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  1. Chapter 6 Chemical Bonding

  2. Ionic Bond • Ionic bond- attraction of cation and anion forms bond • Left and right side of periodic table • To name, change the ending of the anion into –ide • Examples of names, formulas on board

  3. Covalent bond • Covalent bond- sharing of electron pairs • Right and right side on periodic table (includes H) • Name with prefixes • We will do examples of naming formulas • Exceptions: water, ammonia, methane (and many organic compounds)

  4. Prefixes • 1 = mono • 2 = di • 3 = tri • 4 = tetra • 5 = penta • 6 = hexa • 7 = hepta • 8 = octa • 9 = nona • 10 = deca

  5. Polarity • Polar- uneven distribution of electrons • Nonpolar- even distribution of electrons • See examples with arrows on board

  6. Exception to Octet Rule • B, Be, P, S, Xe • See example drawings on board

  7. Electron Dot/ Lewis dot notation • Dots show number of valence electrons • See drawing on board and practice problems • See examples of bonds, including single, double, triple, and resonance • Resonance- several ways to draw one structure

  8. Ionic compound • + and – ions in equal proportion of charges • Formula unit- simplest ratio of ionic compound’s formula • Drawing and breaking of ionic compound on board

  9. Metallic bond • Metals bond to themselves • Examples

  10. VSEPR • Valence shell electron pair repulsion • P. 200 • Examples • Hybrid orbitals (sp, sp2, sp3, dsp3, d2sp3) • Why angles are not exact

  11. Hydrogen Bond and London Dispersion • Hydrogen bond- between H, N, O, F • Weak • London dispersion- momentary attraction to positive nucleus, also weak • See drawings on board0

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