Ch 1 : Questions about molecular shapes

Chapter 1: Structure Determines Properties

Questions on the Shapes of Molecules

In order to be most effective for you, try to answer these questions before you look at the answers !

1.
Give a drawing that clearly indicates the shape of ethane, CH₃CH₃, in 3D space.
On this diagram indicate the electronic geometry about all non-hydrogen atoms.

2.
Give a drawing that clearly indicates the shape of ethene, CH₂CH₂, in 3D space.
On this diagram indicate the electronic geometry about all non-hydrogen atoms.

3.
Give a drawing that clearly indicates the shape of ethanal, CH₃CHO, in 3D space.
On this diagram indicate the electronic geometry about all non-hydrogen atoms.

4.
Give a drawing that clearly indicates the orientation of the atoms in 3-butenal, CH₂=CHCH₂CHO, in 3D space.
On this diagram indicate the electronic geometry about all non-hydrogen atoms.

5. Using a diagram, indicate the direction of molecular polarity for 3-butenal, CH₂=CHCH₂CHO.

Answers ?

1.	Give a drawing that clearly indicates the shape of ethane, CH₃CH₃, in 3D space. On this diagram indicate the electronic geometry about all non-hydrogen atoms.

2.	Give a drawing that clearly indicates the shape of ethene, CH₂CH₂, in 3D space. On this diagram indicate the electronic geometry about all non-hydrogen atoms.

3.	Give a drawing that clearly indicates the shape of ethanal, CH₃CHO, in 3D space. On this diagram indicate the electronic geometry about all non-hydrogen atoms.

4.	Give a drawing that clearly indicates the orientation of the atoms in 3-butenal, CH₂=CHCH₂CHO, in 3D space. On this diagram indicate the electronic geometry about all non-hydrogen atoms.

5.	Using a diagram, indicate the direction of molecular polarity for 3-butenal, CH₂=CHCH₂CHO.