Hóa đại cương - Phần 2

Relative attraction of an atom for electrons, its own and those of other atoms. Pauling Scale. Same trends as ionization energy, increases from lower left corner to the upper right corner. fluorine: E.N. = 4.0 Chapter 2 CHEMICAL BONDS AND MOLECULAR STRUCTURE 1 2 3 Electronegativity • Relative attraction of an atom for electrons, its own and those of other atoms. • Pauling Scale. • Same trends as ionization energy, increases from lower left corner to the upper right corner. • fluorine: E.N. = 4.0

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Chapter 2 CHEMICAL BONDS AND MOLECULAR STRUCTURE 1
2
3
Electronegativity • Relative attraction of an atom for electrons, its own and those of other atoms. • Pauling Scale. • Same trends as ionization energy, increases from lower left corner to the upper right corner. • fluorine: E.N. = 4.0 4
Electronegativities of the Elements 5
6
Type of Chemical Bonding Type Bonding • Non-polar bonds: diff. EN = 0 • Polar bonds: diff. EN > 0 • Ionic bonds: diff. EN > 1.5 7
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Ionic Compounds
Ionic Compounds NaCl; copper(II) sulfate pentahydrate (CuSO4•5H2O, blue); nickel(II) chloride hexahydrate (NiCl2•6H2O, green); potassium dichromate K2Cr2O7, orange); and cobalt(II) chloride hexahydrate 18 18 (CoCl2•6H2O)
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