Valence Electrons in PCl3

Dr. B explains how to draw the Lewis structure for PCl3. The video covers calculating the total valence electrons, positioning phosphorus and chlorine atoms, forming bonds, and ensuring each atom achieves an octet. The process is completed by verifying the structure with all 26 valence electrons used, resulting in a stable PCl3 molecule.

How many valence electrons does Phosphorus have in the PCl3 molecule?

• 5

• 3

• 7

• 8

What is the total number of valence electrons in PCl3?

• 30

• 18

• 21

• 26

Where is Phosphorus placed in the Lewis structure of PCl3?

• At the bottom

• In the center

• At the top

• On the side

How many pairs of electrons are used to form bonds between Phosphorus and Chlorine in PCl3?

• 4

• 2

• 1

• 3

What ensures that all atoms in PCl3 have complete outer shells?

• Removing electrons from Phosphorus

• Using all 26 valence electrons

• Adding more Chlorine atoms

• Adding extra electrons to Chlorine