The symbol is As
The molecular formula for copper(I) arsenide is Cu3As.
The symbol for helium is He. The symbol for mercury is Hg.
Bi is the symbol for bismuth.
The symbol for Sulfur is S.The symbol is S
False. C is the symbol for Carbon. Cl is the symbol for chlorine.
Copper arsenide = Cu3As
There is, to my best knowledge, NO other, more common name for sodium arsenide than sodium arsenide. So that's it.
FeAs2 is the most common arsenide (míneral lollingite) it is not ionic. There are arsenide phases FeAs and Fe3As2 corresponding to iron(III) arsenide and iron (II) arsenide, again the bonding is not ionic.
Sodium Arsenide
lithium arsenide
Copper (III) doesn't exist; copper(II) arsenide is Cu3As2.
The chemical formula for cuprous arsenide is Cu3As.
The molecular formula for copper(I) arsenide is Cu3As.
The chemical formula for sodium arsenide is Na3As.
Iron (III) Arsenide
The chemical formula for the compound Strontium arsenide is SR3AS2.
P. Rutter has written: 'Erbium arsenide precipitates in a gallium arsenide matrix'