Krypton and Chlorine Valence Electrons

The video tutorial explains how to write the Lewis structure for krypton dichloride (KrCl2). It begins by counting the valence electrons, with krypton having 8 and each chlorine having 7, totaling 22 valence electrons. Krypton is placed in the center due to its lower electronegativity, with chlorines on either side. Electrons are paired between atoms to form bonds, and octets are completed for chlorine. Since krypton can have an expanded octet, the remaining electrons are placed on it, finalizing the Lewis structure.

How many valence electrons does krypton have?

• 8

• 10

• 12

• 6

What is the total number of valence electrons in KrCl2?

• 22

• 20

• 24

• 18

Which atom is placed at the center of the KrCl2 structure?

• Krypton

• Chlorine

• Hydrogen

• Oxygen

How many valence electrons are used to form bonds between krypton and chlorine atoms?

• 2

• 8

• 4

• 6

What is the total number of valence electrons used after completing the octets on chlorine atoms?

• 12

• 16

• 24

• 20

Why can krypton have more than 8 valence electrons in its structure?

• It is a metal

• It is highly reactive

• It can have an expanded octet

• It is a noble gas