What exactly is monatomic gold all about?

Answer 1

Monatomic gold simply means gold atoms not combined with themselves. Oxygen, normally, is diatomic, consisting of two atoms of oxygen bound together, as O2. Gold is so inert it doesn't combine with itself like that and, in fact doesn't combine chemically with other atoms very well at all (we geologists call it inert). Gold telluride (AuTe2, the mineral called calaverite) is an exception. The amalgams of gold used by dentists are a mixture, not a compound.

Answer 2

All Gold is monotomic. In fact all transistional metals are monotomic when in ores.