Avogadro's number


General Science

  • noun
    (written as Avogadro’s number)
    the number of atoms or molecules contained in one mole of a substance


  • The number of elementary entities in a mole. This numeric value is approximately 6.022142 × 1023. For instance, a mole of carbon-12 has approximately 6.022142 × 1023 atoms, and has a mass of 12 grams. Also known as Avogadro's constant. Its symbol is NA, or L.
  • abbreviationNA
  • symbolL
  • synonymAvogadro's constant
  • Abbreviation of numerical aperture 2. Same as N/A.

Information & Library Science

  • abbreviation in Internet addresses, the top-level domain for Namibia