1 mole of lithium (Li) is equal to 6.022 × 1023 atoms of lithium. This number is known as Avogadro’s number, which is a fundamental constant in chemistry. It represents the number of atoms, ions, or molecules in one mole of a substance.
To understand this better, consider that a mole is a unit of measurement used in chemistry to express amounts of a chemical substance. It allows chemists to count atoms and molecules in a way that is practical for laboratory work. For example, if you have 1 mole of lithium, you have exactly 6.022 × 1023 lithium atoms.
This concept is crucial because it bridges the gap between the atomic scale and the macroscopic scale, making it easier to work with substances in measurable quantities.