An unknown solid is hard and brittle with a high melting point. It does not conduct electricity as a solid, but does as a liquid. What kind of crystal best describes this solid?

Question

Quizplus · Accepted Answer

Ionic crystals are typically hard and brittle with high melting points. They do not conduct electricity in solid form but do conduct when melted or dissolved in water, as the ions are free to move.

An Unknown Solid Is Hard and Brittle with a High