Electronegativity and Ionic Compounds

The video tutorial explores whether aluminum fluoride (AlF) is an ionic or covalent compound. It concludes that AlF is ionic, supported by its composition of a metal (aluminum) and a non-metal (fluorine). The video further examines the electronegativity difference between aluminum and fluorine, which exceeds 2.0, confirming its ionic nature. Dr. B provides a clear explanation using the periodic table and electronegativity values.

What type of compound is formed when a metal and a non-metal combine?

• Covalent compound

• Molecular compound

• Ionic compound

• Metallic compound

Which element is a metal in the compound aluminum fluoride?

• Fluorine

• Oxygen

• Aluminum

• Nitrogen

What is the significance of the electronegativity difference in determining the type of bond?

• It determines the color of the compound

• It shows the compound's solubility in water

• It helps in identifying the melting point

• It indicates whether the bond is ionic or covalent

What is the electronegativity value of fluorine as mentioned in the video?

• 3.98

• 2.0

• 4.5

• 1.61

Why is aluminum fluoride considered an ionic compound?

• Because it is made of two metals

• Due to the high electronegativity difference between its elements

• Because it is soluble in water

• Due to its metallic luster