Electronegativity and Ionic Compounds

The video tutorial discusses whether lithium nitride (Li3N) is ionic or covalent. It explains that Li3N is an ionic compound, as it consists of a metal (lithium) and a non-metal (nitrogen). The video further examines the electronegativity difference between lithium and nitrogen, which is greater than 2.0, confirming its ionic nature. Dr. B concludes that Li3N is indeed ionic.

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

• Covalent compound

• Molecular compound

• Ionic compound

• Metallic compound

What is the significance of electronegativity in determining the nature of a compound?

• It helps in identifying the color of the compound.

• It determines the boiling point of the compound.

• It helps in determining whether a compound is ionic or covalent.

• It is used to calculate the mass of the compound.

What is the electronegativity difference between lithium and nitrogen?

• 0.98

• 1.5

• 2.06

• 3.04

Which of the following elements is a metal?

• Lithium

• Oxygen

• Nitrogen

• Chlorine

What is the final conclusion about the nature of Li3N?

• It is a molecular compound.

• It is a covalent compound.

• It is an ionic compound.

• It is a metallic compound.