Lewis Structures and Molecular Geometry

The video tutorial explains how to draw the Lewis Structure for C2H6, also known as Ethane. It begins by counting the total number of valence electrons using the periodic table, identifying carbon and hydrogen's valence electrons. The tutorial then guides viewers through constructing the Lewis Structure by placing the least electronegative atom in the center and forming chemical bonds. Finally, it discusses the molecular geometry of C2H6, highlighting its tetrahedral shape and bond angles.

What is the first step in drawing the Lewis Structure for Ethane (C2H6)?

• Identify the least electronegative atom.

• Count the total number of valence electrons.

• Draw the skeletal structure.

• Determine the molecular geometry.

How many valence electrons does each hydrogen atom contribute in C2H6?

• Six

• Two

• Four

• One

Which atom is placed in the center when drawing the Lewis Structure for C2H6?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

What is the purpose of placing a pair of electrons between atoms in the Lewis Structure?

• To indicate the molecular geometry.

• To form a chemical bond.

• To show the electronegativity.

• To balance the equation.

How many valence electrons are used in the Lewis Structure for C2H6?

• 14

• 10

• 16

• 12

How can the covalent bonds in the Lewis Structure be represented?

• With dots

• With lines

• With numbers

• With arrows

What is the molecular geometry around each carbon atom in C2H6?

• Trigonal planar

• Bent

• Linear

• Tetrahedral