Molecular Geometry and Valence Electrons

The video tutorial explores the molecular geometry of oxygen (O2), starting with its Lewis structure, which shows each oxygen atom having eight valence electrons. Due to the presence of only two elements, O2 exhibits a linear molecular geometry. The video further explains how lone pairs affect this geometry, maintaining the linear shape. For molecules with more than two atoms, the concept of steric number is introduced to determine molecular geometry. The tutorial concludes with a reference to additional resources for learning about molecular geometry.

How many valence electrons does each oxygen atom have in O2?

• 6

• 2

• 8

• 4

What is the molecular geometry of O2?

• Bent

• Trigonal planar

• Linear

• Tetrahedral

In a linear molecular geometry, how are the atoms arranged?

• In a circle

• In a triangle

• In a square

• In a straight line

What happens to lone pairs in the linear geometry of O2?

• They form a triangle

• They spread out on the ends

• They disappear

• They form a square

What is the steric number used for in molecular geometry?

• To determine the color of a molecule

• To calculate the mass of a molecule

• To figure out the molecular geometry

• To find the temperature of a molecule

What is the main challenge when determining the geometry of molecules with more than two atoms?

• They are always linear

• They are always circular

• They have no electrons

• They are more complex

Where can you find more information on determining molecular geometry?

• In a physics experiment

• In one of Dr. B's other videos

• In a chemistry textbook

• In a biology class