Compound.
If a substance has more than one word in its name (unless one of them refers to state such as solid, liquid, gas or metal) it is in all likelihood not an element.
The suffixes -ide, -ate, and -ite usually are used to name compounds.
NaCN is the chemical formula of sodium cyanide, a very toxic substance.
Sodium chloride is a compound, not an element. It is composed of sodium and chlorine atoms chemically bonded together in a fixed ratio.
Sodium itself is an element, not a compound. If you are talking about dietary sodium, the most common source that to get that from is the compound sodium chloride (salt).
Sodium sulfate is a compound, not an element. It is composed of the elements sodium, sulfur, and oxygen bonded together in a specific chemical structure.
Sodium metal is an element, not a compound or a solution. It is a pure substance that consists of sodium atoms.
The chemical formula of sodium cyanide is NaCN.
Sodium cyanide (NaCN) is an inorganic toxic salt.
NaCN is the chemical formula of sodium cyanide, a very toxic substance.
The ammonium cyanide chemical formula is NH4CN
Hydrogen flouride is a compound.
Sodium is an element.
Sodium is an element.
Sodium is a chemical element. Salt is a compound of sodium and chlorine.
Sodium hypochlorite is a compound, not an element. It is composed of sodium, chlorine, and oxygen atoms.
Sodium is an element.
Sodium Oxide is a compound.
Sodium chloride is a compound.