Avogadro constant


The Avogadro constant (symbols: L, N<sub>A</sub>), also called the Avogadro number and, in German scientific literature, sometimes also known as the Loschmidt constant/number, is formally defined to be the number of "entities" in one mole,[1][2] that is the number of carbon-12 atoms in 12&nbsp;grams (0.012&nbsp;kg) of unbound carbon-12 in its ground state. The current best estimate of this number is [3]: