A crystal does not conduct electricity, even after melting. It is hard and brittle and melts at a very high temperature. What type of crystal is it?

Question

Quizplus · Accepted Answer

Covalent network crystals are made up of atoms that are covalently bonded to each other in a continuous network, such as diamond or silica. These types of crystals do not have any free electrons or ions to conduct electricity, even when melted. They also have high melting points and are typically hard and brittle.

A Crystal Does Not Conduct Electricity, Even After Melting