What is the value of Avogadro's number?

Avogadro's number, approximately 6.022 x 10²³, defines the number of atoms, molecules, or particles in one mole of a substance. This value is fundamental in chemistry as it allows for the conversion between the amount of substance (in moles) and the number of discrete entities present, enabling chemists to relate the macroscopic world of measurable quantities to the microscopic world of atoms and molecules.

Understanding Avogadro's number is essential in stoichiometry, which involves calculations based on chemical reactions and the amount of reactants and products involved. It facilitates the quantification of substances involved in chemical reactions, making it pivotal for calculations in both theoretical and experimental chemistry.

The other values provided do not correspond to Avogadro's number. They are either too large or too small to represent the number of particles in a mole, thus making them irrelevant in the context of this fundamental constant in chemistry.