Lewis Structures and Valence Electrons

The video tutorial explains the process of drawing the Lewis structure for Si2Br2. It begins by identifying the total number of valence electrons and placing the least electronegative atom, silicon, at the center. Chlorine and bromine atoms are placed on the outside. The tutorial demonstrates how to distribute electrons to form chemical bonds and fill the octets of each atom, ensuring all 32 valence electrons are used. The video concludes with a complete Lewis structure where each atom has a full octet.

What is the total number of valence electrons in the Si2Br2 molecule?

• 32

• 24

• 40

• 16

Why is silicon placed in the center of the Si2Br2 Lewis structure?

• It has the highest electronegativity.

• It has the lowest electronegativity.

• It has the most valence electrons.

• It is the largest atom.

How many electrons are placed between atoms to form chemical bonds in Si2Br2?

• 8

• 6

• 4

• 2

What is the purpose of filling the octets in the Lewis structure?

• To change the molecule's shape

• To reduce the number of electrons

• To stabilize the molecule

• To increase the molecule's size

What confirms that the Lewis structure for Si2Br2 is complete?

• All atoms have 12 valence electrons.

• All atoms have 10 valence electrons.

• All atoms have 6 valence electrons.

• All atoms have 8 valence electrons.