Definition:Avogadro's Constant

Definition

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:

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

Symbol

$N_{\mathrm A}$

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

• Definition:Avogadro's Number

Source of Name

This entry was named for Lorenzo Romano Amedeo Carlo Avogadro.

Sources

• 1964: Milton Abramowitz and Irene A. Stegun: Handbook of Mathematical Functions ... (previous) ... (next): $2$. Physical Constants and Conversion Factors: Table $2.3$ Adjusted Values of Constants

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