The mole concept is a simple method of expressing the amount of a substance. The measurement is usually broken down into two parts – the numerical magnitude and the units in the magnitude expressed. For instance, when a ball’s mass is calculated to be 2 kg, the magnitude is 2, and the unit is kg. When we deal with particles at a molecular level, one gram of a pure element is known to have many atoms. Such scenarios are the reason why the mole concept is widely used. Moreover, the primary focus is on the unit, also known as the mole, containing many particles.
In chemistry, a mole can be referred to as the amount of substance that consists of exactly 6.02214076 * 1023 elementary entities of the substance. This number is known as the Avogadro constant and is denoted by the symbol NA. These elementary entities represented in the moles can be monatomic/polyatomic ions, atoms, molecules, or other particles, such as electrons.