All about Mole!


Mole Day is celebrated every year on the 23rd of October and the day is observed from 6:02 AM to 6:02 PM. Quite famous among chemistry enthusiasts and students, the duration of Mole Day memorializes Avogadro’s Number which is a measuring unit in chemistry.

Avogadro’s number is shown through the formula 6.02X1023 and it defines the number of particles available in one mole of anything or any substance. Mole is counted among the seven base SI units. The day was introduced to trigger students’ interest in chemistry and learners across the world celebrate the day.

Let’s look at some trivia surrounding Mole Day as we celebrate it:

  1. The discovery of the mole is credited to the famed 11th century Italian scientist Amedeo Avogadro whose full name is Lorenzo Romano Amedeo Carlo Avogadro di Queregna e di Cerreto. In 1811, Avogadro introduced a law to the world which was promptly ignored by the people. His findings and efforts were appreciated almost a century later. French chemist and Nobel laureate Jean Baptiste Perrin proposed that the number of molecules be titled “Avogadro’s Constant”.
  2. Mole day was proposed and first announced in the 1980s which inspired Maurice Oehler, a retired chemistry teacher to create the National Mole Day Foundation.
  3. All Mole Days have a unique themes. 2020’s theme is MoleZilla.
  4. In the USA, the American Chemical Society celebrates the mole day whole week by funding the National Chemistry week on the occasion.
  5. Michael Offutt has even sung and composed the Molemorial Day song and recorded a whole album based on the day with songs written about the mole.

The day was introduced to make people more aware and take keen interest in chemistry so if you are a student or scholar, we wish that you explore more and keep learning the fascinating facts about the subject.