Na2S does not contain carbon or hydrogen. Na2S is formed by sodium ions and sulfide ions. So Na2S is not a organic compound.
Na2 is not a compound. When you see a formula containing Na2, it means the compound contains 2 Sodium ions.
This is sodium sulphate.
This compound is sodium hydroxide - NaOH.
The organic compound widely used as a rat poison in the 1950s was warfarin.
Acetone is an organic compound.
Diphosphonic Acid. I beleve.
Na2 is not a compound. When you see a formula containing Na2, it means the compound contains 2 Sodium ions.
This is sodium sulphate.
Na2 does not stand for anything by itself, because Na2 does not exist. Na2 would be part of a compound, such as Na2S or Na2O, in which case it means two sodium ions bonded with one sulfide ion or one oxide ion.
The organic compound widely used as a rat poison in the 1950s was warfarin.
This compound is sodium hydroxide - NaOH.
CrS is Chromium Sulphide/Sulfide. All organic compounds have carbon in them. So no, CrS is not organic.
Organic compound
No, it is not an organic compound.
Yes, it is an organic compound.
Acetone is an organic compound.
Ethanol is an organic compound.