Valence Electrons in KrF4

The video tutorial explains the Lewis structure for Krypton Tetrafluoride (KrF4). It begins by identifying the total number of valence electrons and placing Krypton at the center due to its lower electronegativity. The tutorial then demonstrates how to arrange the electrons to form chemical bonds and fill the octets of the surrounding fluorine atoms. After using 32 electrons, the remaining four are placed on the central Krypton, which can hold more than eight electrons due to its position on the periodic table. The tutorial concludes by verifying that all atoms have a formal charge of zero.

What is the total number of valence electrons in KrF4?

• 28

• 36

• 40

• 32

Which atom is placed at the center of the KrF4 Lewis structure?

• Hydrogen

• Oxygen

• Krypton

• Fluorine

How many valence electrons are used to form chemical bonds in KrF4?

• 16

• 24

• 20

• 32

What is the total number of valence electrons used to fill the octets of Fluorine atoms?

• 36

• 28

• 24

• 32

Where are the remaining valence electrons placed in the KrF4 structure?

• On the Fluorine atoms

• On the Krypton atom

• In the chemical bonds

• They are not used

How many valence electrons does Krypton have in the KrF4 structure?

• 12

• 10

• 14

• 8

What is the formal charge on each atom in the KrF4 Lewis structure?

• 0

• -1

• +2

• +1