Which type (or types) of crystalline solid is characterized by each of the following? (d) network of covalent bonds.

Video transcript

Hey everyone, we're asked to identify the type or types of crystalline solid that possess the following properties. Good thermal and electrical conductor and can be deformed without breaking. So first we have a Covalin network solid as we've learned, we know that a Covalin network solid is where atoms are bonded by Covalin bonds in a single continuous network. Now we also know that these are poor conductors of heat and electricity and these also have a very high melting point. So a can't be your answer. Next. We have ionic solid. Now we know that an ionic solid is held by strong electrostatic attraction. And we've also learned that these are poor conductors of heat and electricity though these are good electrical conductors in its molten form. These also have a very high melting point. So B can't be our answer even though it is a good electrical conductor in its molten form. Next we have metallic solids. Now a metallic solid is composed of metal with another metal or by itself and it is held by metallic bonds. These are going to be good conductors of heat and electricity and these are also lust reace malleable and ductile. And we have a relatively low melting point. So it looks like answer choice C. Is going to be our final answer. Now I hope this made sense. And let us know if you have any questions