Definition:Avogadro's Constant

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Avogadro's constant is defined as the number of particles in a mole, expressed in a form where its unit of measurement is the reciprocal mole.

Hence its value is defined as:

$6 \cdotp 02214 076 \times 10^{23} \, \mathrm {mol^{-1} }$


$N_{\mathrm A}$

The symbol often used for Avogadro's constant is $N_{\mathrm A}$.

Its $\LaTeX$ code is N_{\mathrm A .}

Also known as

Avogadro's constant can also be seen referred to as the Avogadro constant.

Also see

Source of Name

This entry was named for Lorenzo Romano Amedeo Carlo Avogadro.


which gives the mantissa as $6 \cdotp 022 \, 169$ with an uncertainty of $\pm 40$ corresponding to the $2$ least significant figures