Answer :
The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023).
What is Avogadro's Number?
The ratio between the quantity of substance in a sample and the number of constituent particles (often molecules, atoms, or ions) in a sample is known as the Avogadro constant (NA or L). The reciprocal mole, which is its SI unit, is defined precisely as NA = 6.022140761023 mol1. It bears Amedeo Avogadro's name, an Italian scientist. Despite being named after him, he was not the chemist who determined the value of this substance. Four years after Avogadro's passing, Stanislao Cannizzaro explained this quantity before the Karlsruhe Congress in 1860.
The Avogadro number is a dimensionless number that represents the Avogadro constant as a numerical value given in reciprocal moles.
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