ASO4 3- Ion Lewis Structure

The video tutorial explains how to write the Lewis structure for ASO4 3-. It begins by counting the valence electrons of arsenic and oxygen, considering the negative charge of the ion. The tutorial then describes placing arsenic at the center and arranging the oxygen atoms around it, forming bonds and ensuring each atom achieves an octet. The video further discusses calculating formal charges and optimizing the structure by creating a double bond to achieve more favorable charges. The final structure is presented with brackets and the charge notation.

How many valence electrons are present in the ASO4 3- ion?

• 32

• 35

• 28

• 29

Which element is placed at the center of the ASO4 3- Lewis structure?

• Oxygen

• Sulfur

• Phosphorus

• Arsenic

How many valence electrons are used to form initial bonds in the ASO4 3- structure?

• 8

• 16

• 32

• 24

What is the total number of valence electrons used after completing the octets around the oxygen atoms?

• 32

• 16

• 24

• 40

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

• -1

• -2

• 0

• +1

What is the formal charge on the central arsenic atom in the initial Lewis structure?

• -1

• 0

• +1

• -2

What adjustment is made to improve the formal charges in the ASO4 3- Lewis structure?

• Changing the central atom

• Forming a double bond

• Removing electrons

• Adding more electrons

What is the formal charge on the oxygen atom after forming a double bond with arsenic?

• +1

• 0

• -1

• -2

What is the formal charge on the arsenic atom after forming a double bond with oxygen?

• -2

• -1

• 0

• +1

What notation is used to indicate that ASO4 3- is an ion in the Lewis structure?

• Brackets

• Quotation marks

• Curly braces

• Parentheses