Statement 1: Ionic compounds have high boiling points.
Statement 2: The oppositely charged ions are held together by strong electrostatic forces of attraction and require more heat energy to break the bonds.
Both statements are true and Statement 2 is the right explanation of Statement 1.
Ionic bond is formed when the positive and negative ions come together. The strong electrostatic forces of attraction between these positive and negative ions make the bond stronger which results in high melting and boiling point.