Linear Molecular Geometry Concepts

The video tutorial explains linear molecular geometry, focusing on a steric number of two, where two atoms are attached to a central atom with no lone pairs, resulting in a bond angle of 180°. Carbon dioxide is used as an example, illustrating the concept with a central carbon atom double-bonded to two oxygen atoms. The tutorial also covers the 3D representation of this geometry and introduces the AXE notation, emphasizing that even with one other atom, the geometry remains linear.

What is the steric number associated with linear molecular geometry?

• One

• Two

• Three

• Four

In a linear molecular geometry, what is the typical bond angle?

• 180°

• 120°

• 360°

• 90°

Which molecule is a classic example of linear molecular geometry?

• Methane (CH4)

• Water (H2O)

• Carbon Dioxide (CO2)

• Ammonia (NH3)

How are atoms arranged in a linear molecular geometry in three dimensions?

• In a circular shape

• In a square shape

• In a straight line

• In a triangular shape

What happens to the bond angle when two atoms are bonded to a central atom in a linear geometry?

• It becomes 180°

• It becomes 120°

• It becomes 90°

• It becomes 360°

If a molecule has only two atoms, what is its molecular geometry?

• Tetrahedral

• Linear

• Bent

• Trigonal planar

What does the 'A' represent in AX2 notation?

• The central atom

• A lone pair

• An atom bonded to the central atom

• A double bond

In AX2 notation, what does 'X' stand for?

• A triple bond

• A lone pair

• The central atom

• An atom bonded to the central atom

What is the molecular geometry of a molecule with a central atom and two bonded atoms with no lone pairs?

• Bent

• Trigonal planar

• Linear

• Tetrahedral