The mass of one mole of neon is 20.18 g. This value can be found on the periodic table by locating the atomic mass of neon and converting it to grams per mole.To calculate the atomic mass of neon, we add the atomic number (10) to the number of neutrons in the most common isotope of neon (10) since atomic mass = protons + neutrons.10 + 10 = 20Thus, the atomic mass of neon is 20 g/mol, which is equivalent to the mass of one mole of neon. Rounded to two decimal places, the mass of one mole of neon is 20.18 g/mol.