'he largest American Eagle gold has a mass of 28.4 g. The atomic number of gold (the number f protons in the ucleus of an atom gold) is 79, and thus the mumber of electrons in a neutral old atom is also 79. The atomic mass of gold is 197, which means that 1 mol of gold has mass 197 g. How many electrons are contained in one pure gold coin? What is the total %3| egative charged contained in the coin?