Geometry and Bonding in SO2

The video tutorial explains how to determine the molecular geometry of sulfur dioxide (SO2) using two methods: the Lewis structure and AXN notation. The Lewis structure helps visualize how atoms and unbonded electron pairs repel each other, resulting in a bent shape. The AXN notation further confirms this shape, identifying SO2 as AX2N with a bond angle of 120 degrees. The tutorial concludes with a summary of these findings.

What is the primary reason for the bent shape of the SO2 molecule according to the Lewis structure?

• The presence of double bonds

• The repulsion between electron pairs

• The attraction between sulfur and oxygen

• The size of the sulfur atom

In the AXN notation for SO2, what does 'A' represent?

• The number of unbonded electron pairs

• The central atom, which is sulfur

• The number of bonded atoms

• The bond angle

How many bonded atoms are represented by 'X' in the AXN notation for SO2?

• Three

• Four

• One

• Two

What is the bond angle in the bent shape of SO2 as determined by AXN notation?

• 109.5 degrees

• 180 degrees

• 120 degrees

• 90 degrees

Which of the following best describes the molecular geometry of SO2?

• Bent

• Trigonal planar

• Tetrahedral

• Linear

What is the significance of the unbonded electron pair in the geometry of SO2?

• It contributes to the bent shape

• It causes the molecule to be linear

• It has no effect on the geometry

• It increases the bond angle