Ch 4 Student Notes

Ch 4 Student Notes - 1 Chapter 4 Chemical Bonding: The...

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1 Chapter 4 Chemical Bonding: The Ionic Bond Model
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2 Ch 4.1 Chemical Bonds A chemical bond is the attractive force that holds two atoms together in a more complex unit. Ionic Bond electron transfer between atoms formation of ions ionic compounds Covalent Bond sharing of electrons between atoms molecules
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3 Properties Ionic compounds Very ______ m.p. & b.p. Crystalline solids, salts Good conductors of electricity as liquids or in solution Molecular compounds Much ________ m.p. & b.p. Gases, liquids, or low m.p. solids Do Not conduct electricity demo: compare electrical conductivity in solution
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4 The type of a chemical bond is determined by: Valence shell electron configuration Ionization energies Electronegativities Recall from Ch 3 that a valence electron is an electron in the outermost electron shell (valence shell) of a representative element (this includes the noble gases). In Chem 101 - only electrons in _________ orbitals are considered valence electrons.
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Ch 4.2 Valence Electrons and Lewis Symbol This topic was covered as part of Ch 3.7. Please remember that you must depict unpaired electrons as single dots and paired electrons as pairs of dots. Please note that in your textbook, including Fig 4.1, this rule is not obeyed and that some of the symbols are considered incorrect in this course. . examples
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This note was uploaded on 06/03/2011 for the course CHM 123 taught by Professor Woodward during the Fall '08 term at Ohio State.

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Ch 4 Student Notes - 1 Chapter 4 Chemical Bonding: The...

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