Polar Molecules

• polar molecules = positive and negative end on molecule

• 2 conditions

  • must have a polar bond

  • shape must allow positive and negative ends

1. determine EN of bond

   1. polar bond

2. determine polar shape

   1. positive and negative end

   2. 2 positive ends cancel out, 2 negative ends cancel out

3D Molecules

• in the plane = ———-

• projects forward = |>

• projects backwards = …..

Types of Molecular Shapes

• linear

• tetrahedral

• trigonal pyramidal

• bent