Crystals can be made up of which of the following kinds of particles? 1. molecules only
2. atoms only
3. atoms, ions, or molecules
4. atoms and ions

3. atoms, ions, or molecules

Explanation:

A crystal is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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a polar bond is formed when electrons are shared unevenly between atoms