Question

Why do ionic compounds have high melting points?​

Answer 1

Answer:

Ionic compounds are held together by electrostatic forces between the oppositely charged ions . ... As the ionic lattice contains such a large number of ions, a lot of energy is needed to overcome this ionic bonding so ionic compounds have high melting and boiling points.

Answer 2

Answer:

It is due to strong forces of attraction between  positively charged and negatively charged ions.