More practice with Lewis Dot Structures

1
More practice with Lewis Dot Structures

• Please draw the Lewis Dot structures for the
  following

2
Electronegativity

• Electronegativity differences determine whether a
  bond is ionic, polar covalent, or nonpolar
  covalent
• The larger the difference in the
  electronegativity, the more ionic the bond
• Ionic character increases as covalent character
  decreases

3
Which atom in each polar covalent bond is most
electronegative?

• N O
• S F
• N H

4
Which of the following molecules contain polar
bonds?

• CO2
• O3
• N2
• H2O

5
Exceptions to the octet rule

• We dont want 8!!
• H, He, Li, Be
• Incomplete Octet (rare)
• B will only bond with 3 H
• How many electrons are present?
• Odd Electrons
• NO, and NO2
• Expanded Octet
• SF6, PCl5, XeF6