Understanding SO2 Molecular Geometry and Bonding

The video tutorial explains the electron geometry of sulfur dioxide (SO2), focusing on the concept of electron domains and steric number. It describes how the steric number determines the trigonal planar electron geometry of SO2. The video differentiates between electron geometry and molecular geometry, highlighting that while the electron geometry is trigonal planar, the molecular geometry is bent due to the lone pair on sulfur. It also discusses the Lewis structure of SO2, noting the possibility of an expanded octet for sulfur and the importance of formal charges in determining the most accurate structure.

What is the central atom in the electron geometry of SO2?

• Oxygen

• Sulfur

• Nitrogen

• Hydrogen

How many electron domains are bonded to the central atom in SO2?

• Five

• Four

• Three

• Two

What does the steric number indicate in terms of electron geometry?

• The number of lone pairs

• The type of bonds present

• The number of atoms bonded to the central atom

• The shape of the molecule

What is the electron geometry of SO2?

• Linear

• Trigonal Planar

• Tetrahedral

• Bent

How does the molecular geometry of SO2 differ from its electron geometry?

• It is square planar instead of trigonal planar

• It is bent instead of trigonal planar

• It is tetrahedral instead of trigonal planar

• It is linear instead of bent

What effect do lone pairs have on the shape of SO2?

• They make the molecule linear

• They have no effect

• They make the molecule tetrahedral

• They push bonded atoms closer together

In the 3D model of SO2, how are the oxygen atoms bonded?

• Triple bonds

• Single bonds

• No bonds

• Double bonds

What is an expanded octet, as seen in the SO2 molecule?

• Exactly eight electrons around the central atom

• More than eight electrons around the central atom

• Less than eight electrons around the central atom

• No electrons around the central atom

Why is it more accurate to represent SO2 with two double bonds?

• It makes the molecule more reactive

• It reduces the formal charges

• It increases the molecular weight

• It changes the electron geometry

What is the formal charge of sulfur in the most accurate Lewis structure of SO2?

• +1

• 0

• -1

• +2