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.
This is a ionic compound too. Sulfur shows +6 in sulfate ion.
Na2+ + Cl2- = NaCl so NaCl is the answer.
Na2S does not contain carbon or hydrogen. Na2S is formed by sodium ions and sulfide ions. So Na2S is not a organic compound.
This is sodium sulphate.
Diphosphonic Acid. I beleve.
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.
This compound is sodium hydroxide - NaOH.
This is a ionic compound too. Sulfur shows +6 in sulfate ion.
Na2+ + Cl2- = NaCl so NaCl is the answer.
Subscript (:This is a subscript: (Na2) the "2" is the Subscript.
Na2S does not contain carbon or hydrogen. Na2S is formed by sodium ions and sulfide ions. So Na2S is not a organic compound.
Two compounds of hassium were prepared: HsO4 and Na2[HsO4(OH)2].
It's the salt, sodium sulphate. Na2 = two atoms of sodium SO4 = the sulphate ion, one sulphur and four oxygen atoms.
Um, I don't know about the other compounds, but ZnS is insoluble.
Na2[Na4(PO3)6]