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There are three main types of crystalline solids.
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The first one we're going to talk about are ionic solids.
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And ionic solids are made of oppositely charged ions held together by strong electrostatic interactions.
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So these are going to be made of cateons and anions that are going to be held together by their opposing charges.
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They're going to be attracted together.
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An example is sodium chloride or table salt.
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And here you can see how the network of our cadians and anians lines up to form our table salt.
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Next one are atomic solids.
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These are fundamentally formed by atoms.
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They can be either covalent networks, which are atoms connected by strong covalent bonds.
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An example would be a diamond.
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Or they can be metals...