PCl2- Lewis Structure Concepts

The video tutorial explains the process of drawing the Lewis structure for the PCl2- ion. It begins by counting the valence electrons, placing phosphorus at the center due to its lower electronegativity, and arranging chlorine atoms on either side. The tutorial demonstrates forming chemical bonds and completing the octets for each atom. Finally, it shows how to represent the ion with brackets and a negative sign, ensuring all 20 valence electrons are used and octets are satisfied.

How many valence electrons does phosphorus contribute in the PCl2- Lewis structure?

• 3

• 5

• 7

• 9

What is the total number of valence electrons in the PCl2- Lewis structure?

• 16

• 18

• 20

• 22

Which atom is placed at the center of the PCl2- Lewis structure?

• Chlorine

• Phosphorus

• Nitrogen

• Oxygen

How many valence electrons are used to form chemical bonds between the atoms in the PCl2- structure?

• 2

• 8

• 4

• 6

What is the total number of valence electrons used to complete the octets in the PCl2- structure?

• 22

• 16

• 20

• 18

How many valence electrons does each chlorine atom have in the PCl2- structure?

• 9

• 8

• 7

• 6

What is added to the PCl2- Lewis structure to indicate it is an ion?

• A positive sign

• A lone pair

• A negative sign

• A double bond