The radioactive isotope 198Au has the mass number 198.
Atomic mass units
Cobalt is an atomic mass of 58.93 atomic mass units
The Atomic Mass is the mass (weight) of the element measured in atomic mass units (AMU)
The Atomic Mass for Gold is 197
Atomic mass
Palladium
The atomic mass (or weight) of silver is 107.8682 amu (atomic mass units)
The atomic mass of tin is approximately 118.71 atomic mass units.
The atomic mass of magnesium is approximately 24.3 atomic mass units.
The Atomic Mass of gold is 196.97/ 197
The Atomic Mass of silver is 107.8682 amu (atomic mass units).