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1372 Lec 22Sep2011 - 1 General Chemistry 4th edition Hill...

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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 1
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 12 Sections 9.1-9.4, 9.6-9.7 Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic compounds. Chemical bonds are electrostatic forces; they reflect a balance in the forces of attraction and repulsion between electrically charged particles. Chemical Bonds: A Preview Chapter Nine: Chemical Bonds Chapter Nine: Chemical Bonds
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 13 Energy of Interaction Closer together; attraction increases. At 74 pm, attractive forces are at a maximum, energy is at a minimum. Closer than 74 pm, repulsion increases. Hydrogen nuclei far apart; just a little attraction.
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 14 Valence electrons play a fundamental role in chemical bonding. When metals and nonmetals combine, valence electrons usually are transferred from the metal to the nonmetal atoms, giving rise to ionic bonds .
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