Electronegativity and Ionic Compounds

The video explores whether potassium bromide (KBr) is an ionic or covalent compound. Two methods are discussed: using the periodic table to identify KBr as ionic due to the presence of a metal and a non-metal, and calculating the difference in electronegativity between potassium and bromine, which confirms KBr as ionic since the difference is greater than 2.

What are the two methods mentioned to determine if KBr is ionic or covalent?

• Using the periodic table and electronegativity differences

• Using boiling and melting points

• Using molecular geometry and bond angles

• Using color and texture

According to the periodic table, what type of compound is formed when a metal and a non-metal combine?

• Amphoteric compound

• Metallic compound

• Ionic compound

• Covalent compound

What is the significance of a difference in electronegativity greater than 2?

• It indicates a covalent bond

• It indicates a hydrogen bond

• It indicates an ionic bond

• It indicates a metallic bond

What is the electronegativity value of potassium?

• 0.82

• 2.96

• 3.44

• 1.00

What is the electronegativity value of bromine?

• 0.82

• 1.50

• 3.00

• 2.96

What is the calculated difference in electronegativity between potassium and bromine?

• 1.14

• 2.14

• 3.14

• 4.14

Why is KBr considered an ionic compound based on electronegativity?

• Because the difference is greater than 2

• Because the difference is exactly 2

• Because the difference is less than 1

• Because the difference is less than 2

What is the conclusion about the nature of KBr based on both methods discussed?

• KBr is an amphoteric compound

• KBr is a metallic compound

• KBr is an ionic compound

• KBr is a covalent compound