No. Au is gold and Sn is tin; they're elements.
Gold and tin are chemical elements.
This is an ionic compound.
The compound Sn SO3 2 is Tin (IV) Sulphite. It can be produced easily in a chemistry lab, but has few if any commercial applications.
Sn is the element tin, a soft metal with a relatively low melting temperature.
Yes, this is an ionic compound.
It's a mystery.
Sn=0
Tin hydride.
Yes, gold is an element.Yes It is-see AU on table
The compound Sn2O3 is not well characterised and is an intermediate formed when SnO disproportionates to SnO2 and Sn metal. The best name for it is ditin trioxide, a name that reflects the composition. Probably it contains Sn(II) and Sn(IV) in equal proportions.
Formula: Sn(NO3)2
Not under normal circumstances, but it may be possible to create it.
CO is a compound, all the others are elements. A compound contains 2 or more elements.