CH8 notes - Chapter 8 Chemical Bonding A. B. C. D. E. F. G....

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Chapter 8 Chemical Bonding A. Lewis Dot Symbols B. Ionic Bonding C. Covalent Bonding D. Bond Polarity E. Lewis Structures F. Resonance G. Bond Length and Strength HW #P8 Covered on Quiz 4 and Final Exam
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Chapter 8 Chemical Bonding We have studied the atom and electronic configuration. How are atoms held together in molecules? Chemical bonds hold atoms together. A. Lewis Dot Symbols In Chapter 6 we used the noble gas configurations as shorthand for electron configurations. The electrons in addition to the last noble gas are valence electrons and represented with a dot. Li B 1s 2 2s 1 or [He]2s 1 Li has one valence electron Li @ Examples: (1) C (2) F (3) Cl Lewis dot structures are not used for transition metals. Valence electrons are only considered for the largest value of n for Lewis dot symbols. Examples: (1) Br (2) I
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Z 1 Z 2 d Octet Rule B Atoms tend to gain or lose electrons until they are surrounded by eight electrons. Group 1 Group 2 Group 13, 14, 15 Group 16 Group 17 B. Ionic Bonding Ionic bonds are electrostatic forces that exist between particles of opposite charge and arise when
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CH8 notes - Chapter 8 Chemical Bonding A. B. C. D. E. F. G....

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