Atomic Number Density

on . Posted in Chemical Engineering

Atomic number density, abbreviated as \( \eta \)  (Greek symbol eta), is the number of atoms of a particular element per unit volume of a substance.  It is a measure of how closely packed atoms are within a material.  The atomic number represents the number of protons in the nucleus of an atom of that element.  Therefore, the atomic number density is specific to a particular element and reflects how many atoms of that element are present in a given volume.

Atomic number density is used in various scientific and engineering fields, such as materials science, physics, and chemistry, where understanding the distribution and arrangement of atoms within a material is essential for predicting its properties and behavior.


Atomic Number Density formula

\( \eta =  N \;/\; V \)     (Atomic Number Density)

\( N =  \eta \; V  \)

\( V =  N  \;/\; \eta \)

Symbol English Metric
\( \eta \)  (Greek symbol eta) = atomic number density  \(atoms \;/\; in^3\)  \(atoms \;/\; mm^3\)
\( N \) = total number of atoms of the element \(dimensionless\)
\( V \) = volume of substance \(in^3\) \(mm^3\)


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Tags: Density Chemical Elements