List the four main classes of crystalline solids, and give a specific example of each.

Video transcript

Hey everyone, we're told that crystalline solids are classified into four main classes. List them and provide an example for each first. Let's go ahead and list are forming classes and describe each one. So one is in fact ionic solids and these are composed of a metal plus a nonmetal. Now looking at our answer choices, an example would be rock, salt and sugar would not be considered an ionic solid since it's only composed of carbon, hydrogen and oxygen. So this means that A and C. Can't be our answer. Now let's go ahead and move on to our next class. For the next one we have a molecular solid. Now a molecular solid is composed of Covalin bonds and an example would be argon. So answer choice D can't be our answer since dispersion solid is not one of our four main classes, but let's go ahead and continue naming our other main classes. A 3rd 1 would be our metallic solids. Now these are composed of a metal plus another medal or just the metal by itself. So, gold would be an example of a metallic solid. And lastly our last main class would be a Covalin solid. Now a Covalin solid is also called a network solid where atoms are bonded by covalin bonds in a single continuous network and an example would in fact be graphite. So our answer here would be answer choice B which lists all our four main classes and provides an example of each. Now I hope that made sense. And let us know if you have any questions