Molecular Geometry and AXE Notation

The video tutorial explores the molecular geometry and bond angles of tellurium tetrachloride (TeCl4). It begins with an introduction to the concept and the importance of the Lewis structure, highlighting the central tellurium atom's valence electrons and its ability to have an expanded octet. The tutorial then explains the steric number and how it leads to a seesaw molecular geometry. A 3D visualization of the geometry is provided, showing how the lone pair affects the structure. The video concludes with the use of AXE notation to confirm the seesaw geometry and a discussion on bond angles.

What is the first step in determining the molecular geometry of a compound like TeCl4?

• Measuring the bond lengths

• Drawing the Lewis structure

• Identifying the bond angles

• Calculating the molecular weight

How many valence electrons does the central tellurium atom in TeCl4 have?

• 8

• 6

• 10

• 12

What is the steric number of TeCl4?

• 4

• 5

• 6

• 3

Which molecular geometry is associated with a steric number of 5 and one lone pair?

• Square planar

• Seesaw

• Trigonal bipyramidal

• Tetrahedral

How does the lone pair affect the molecular geometry of TeCl4?

• It makes the geometry linear

• It causes the geometry to be seesaw

• It changes the geometry to octahedral

• It has no effect on the geometry

What does the 'A' represent in AXE notation for molecular geometry?

• The number of lone pairs

• The central atom

• The bond angles

• The number of surrounding atoms

In the AXE notation for TeCl4, what does the 'X' represent?

• The number of lone pairs

• The bond angles

• The central atom

• The number of chlorine atoms

What is the AXE notation for TeCl4?

• AX2E3

• AX4E1

• AX3E2

• AX5E0

What is the bond angle between the chlorine atoms in TeCl4?

• 109.5 degrees

• 90 degrees

• 180 degrees

• 120 degrees

Which molecular geometry does the AX4E1 notation correspond to?

• Tetrahedral

• Trigonal planar

• Linear

• Seesaw