Molecular Geometry of CCl4

The video tutorial explains how to find the steric number for carbon tetrachloride (CCl4). It begins with the importance of having a valid Lewis structure and then identifies the central carbon atom. The tutorial counts the number of atoms bonded to the central carbon and checks for lone pairs, concluding that the steric number is four. This number helps determine the molecular geometry, which is tetrahedral for CCl4. The video is presented by Dr. B, who provides a link for further help with Lewis structures.

What is the first step in determining the steric number for CCl4?

• Identifying the central atom and its bonded atoms

• Calculating the molecular geometry

• Counting the lone pairs on the central atom

• Drawing a valid Lewis structure

Which atom is the central atom in CCl4?

• Hydrogen

• Carbon

• Chlorine

• Oxygen

How many chlorine atoms are bonded to the central carbon in CCl4?

• 4

• 3

• 5

• 2

What is the steric number of CCl4?

• 5

• 3

• 2

• 4

How many lone pairs are present on the central carbon atom in CCl4?

• 3

• 2

• 1

• 0

What is the molecular geometry of CCl4 based on its steric number?

• Linear

• Trigonal planar

• Tetrahedral

• Bent

Why is the steric number useful in chemistry?

• It calculates the molecular weight

• It determines the molecular geometry

• It predicts the color of the compound

• It helps in identifying the type of bonds