Lewis Structures and Molecular Geometry of XeOF2

The video tutorial explains how to draw the Lewis structure for XeOF2, starting with counting valence electrons and placing atoms in the correct positions. It discusses the concept of expanded octets and formal charges, optimizing the structure to achieve zero formal charges. The molecular geometry is described as T-shaped, with bond angles around 90 degrees. The tutorial concludes with the best Lewis structure for XeOF2, ensuring all formal charges are zero.

How many total valence electrons are present in XeOF2?

• 36

• 32

• 28

• 24

Which atom is placed at the center of the Lewis structure for XeOF2?

• Hydrogen

• Fluorine

• Oxygen

• Xenon

What is the total number of valence electrons used after forming bonds and completing octets in the initial Lewis structure?

• 26

• 30

• 24

• 28

What is the formal charge on the oxygen atom in the initial Lewis structure of XeOF2?

• 0

• +1

• -1

• -2

Which of the following atoms can have an expanded octet?

• Xenon

• Hydrogen

• Fluorine

• Oxygen

How can the formal charges in the Lewis structure of XeOF2 be optimized?

• By removing electrons from xenon

• By adding a lone pair to oxygen

• By adding more electrons to fluorine

• By forming a double bond with oxygen

Why is the final Lewis structure of XeOF2 considered better than the initial one?

• It has more bonds

• It is more symmetrical

• It uses fewer electrons

• It has zero formal charges

What is the molecular geometry of XeOF2?

• T-shaped

• Tetrahedral

• Trigonal planar

• Linear

What is the approximate bond angle in the T-shaped molecular geometry of XeOF2?

• 60 degrees

• 90 degrees

• 120 degrees

• 180 degrees

How many lone pairs are present on the central xenon atom in the final Lewis structure of XeOF2?

• Four

• One

• Two

• Three