Answer:
A substance has an extended structure composed of two different elements. The elements are a metal and a non-metal. The property would this substance most likely have a high melting point.
Step-by-step explanation:
When a metal and a non - metal combine it will form ionic compound. while when nonmetals combine with other nonmetal it will form covalent compound.
An ionic compounds have high melting point because an electrostatic force between particles is very high and difficult to break. so due to high electrostatic attraction between ions.