Valence Electrons and Lewis Structures

This video tutorial explains how to write the Lewis structure for SBF5. It begins by counting the valence electrons for antimony and fluorine, then proceeds to construct the Lewis structure by placing antimony at the center and surrounding it with fluorine atoms. The video discusses the formation of chemical bonds and the completion of octets for fluorine atoms, as well as the expanded octet for antimony. Finally, the molecular geometry of SBF5 is described as trigonal bipyramidal.

How many total valence electrons are there in the SBF5 molecule?

• 35

• 30

• 45

• 40

Which element is placed at the center of the Lewis structure for SBF5?

• Fluorine

• Antimony

• Oxygen

• Hydrogen

What is the purpose of placing valence electrons between antimony and fluorine in the Lewis structure?

• To create a polar molecule

• To balance charges

• To form covalent bonds

• To form ionic bonds

How many valence electrons does each fluorine atom have after completing its octet?

• 7

• 6

• 9

• 8

What is unique about the central antimony atom in the SBF5 Lewis structure?

• It has fewer than 8 electrons

• It has an expanded octet

• It forms ionic bonds

• It has a standard octet

What is the molecular geometry of the SBF5 molecule?

• Tetrahedral

• Trigonal bipyramidal

• Trigonal planar

• Linear

Why is it acceptable for antimony to have more than 8 valence electrons in SBF5?

• It forms hydrogen bonds

• It can have an expanded octet

• It is highly electronegative

• It is a metal