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| Examples of Some Substances Having Close Packed Structures |
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| Noble gases |
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| All noble gases crystallize in ccp structure except helium which has hcp structure. |
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| Metals |
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| Be, Cd, Co, Mg and Zn - have hcp structure. |
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| Al, Ag, Au, Cu, Ni and Pt - have ccp structure. |
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| Molecular substances |
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| Molecular substance having nearly spherical molecules have closed packed arrangements. |
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| Examples: Solid H2 has hcp structure, while solid CH4, HCl, H2S have ccp structure. |
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| Ionic substances |
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| In ionic substances the larger ions form the close packed arrangement and smaller ions occupy the voids. |
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| Example: |
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