The approximate atomic radius of gold is 0.1441 nanometers or 0.1441 x 10-9 meters (i.e. 0.1441 millionth of a milimeter!)
Answered by: Paul Turek, PE
'To myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.'