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atomic size

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atomic size

Size of an atom expressed as the radius in angstroms or other units of length.

The sodium atom has an atomic radius of 1.57 angstroms (1.57 x 10−8 cm). For metals, the size of the atom is always greater than the size of its ion. For non-metals the reverse is true.



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? Mentioned in ? References in periodicals archive
 
Atoms come in a variety of sizes, but scientists often refer to a nominal atomic size as the diameter of the smallest, most abundant atom--hydrogen.
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Remarkably, the same effect that suppresses intermingling within a crystal - atomic size mismatch - favors intermixing at its surface.
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