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Chemical Bonding. 6.1 – Introduction to Chemical Bonding. Bonds. Chemical Bond – a mutual electrical attraction b/t the nuclei & valence e- of different atoms that binds atoms together Why bond? Stability. Types of Chemical Bonding.

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chemical bonding

Chemical Bonding

6.1 – Introduction to Chemical Bonding

bonds
Bonds
  • Chemical Bond – a mutual electrical attraction b/t the nuclei & valence e- of different atoms that binds atoms together
  • Why bond?
  • Stability
types of chemical bonding
Types of Chemical Bonding
  • Ionic bonding – electrical attraction between cations and anions
    • Transfer of electrons
  • Covalent bonding – results from sharing e-
ionic or covalent
Ionic or Covalent
  • Very rare for a purely ionic or covalent bond.
  • Remember electronegativity?
  • Used to determine bond character
  • The greater the difference, the greater the ionic character
  • Why?
ionic or covalent1
Ionic or Covalent
  • e- negdifference > 1.7 = ionic
  • e- negdifference between 1.7 and 0.5 = polar covalent
  • e- negdifference < 0.5 = non polar covalent
definitions
Definitions
  • Nonpolar-covalent bond – bonding e-’s are shared equally between the bonded atoms
  • Polar – uneven distribution of charge
  • Polar covalent bond– bonded atoms have an unequal attraction for shared e-
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