Lewis Structures and Valence Electrons

This video tutorial explains how to draw the Lewis structure for SbF3. It begins by counting the valence electrons for antimony and fluorine, then places the least electronegative element, antimony, at the center. The tutorial demonstrates forming chemical bonds by placing valence electrons between atoms and completing the octets for each fluorine atom. Finally, it ensures that antimony also achieves an octet, resulting in the complete Lewis structure for SbF3.

How many valence electrons does antimony have?

• 3

• 5

• 8

• 7

Which group is fluorine in, and how many valence electrons does it have?

• Group 18, 8 electrons

• Group 17, 7 electrons

• Group 16, 6 electrons

• Group 15, 5 electrons

What is the least electronegative element in SBF3 that should be placed at the center?

• Fluorine

• Antimony

• Oxygen

• Hydrogen

Where should the fluorine atoms be placed in the Lewis structure of SBF3?

• Between antimony atoms

• On the outside

• Above antimony

• At the center

What is formed when valence electrons are placed between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

How many valence electrons are used to complete the octets of the fluorine atoms?

• 26

• 24

• 20

• 18

How many valence electrons are left after completing the octets of the fluorine atoms?

• 0

• 6

• 2

• 4

What is the total number of valence electrons used in the Lewis structure of SBF3?

• 27

• 26

• 25

• 24