Lewis Structures and Valence Electrons

The video tutorial explains the Lewis structure of AsH3, Arsenic Trihydride. It begins by placing arsenic at the center with three hydrogens on the outside. The tutorial calculates the total valence electrons as eight, using them to form chemical bonds and complete the octet for arsenic. Each hydrogen achieves a full outer shell with two electrons. The video concludes with a summary of the structure and a sign-off by Dr. B.

What is the central atom in the Lewis structure of AsH3?

• Arsenic

• Hydrogen

• Nitrogen

• Oxygen

How many total valence electrons are used in the Lewis structure of AsH3?

• 8

• 6

• 12

• 10

How many valence electrons does each Hydrogen atom contribute in AsH3?

• 1

• 3

• 4

• 2

What is the total number of valence electrons used to form bonds in AsH3?

• 2

• 4

• 6

• 8

What is the significance of the octet rule in the Lewis structure of AsH3?

• It ensures that Arsenic has 8 valence electrons.

• It ensures that all atoms have 6 electrons.

• It ensures that Hydrogen has 8 valence electrons.

• It ensures that all atoms have 10 electrons.