Sodium amalgam is an alloy of sodium with mercury. The reaction between sodium and mercury does not take place so oxidation number of sodium in sodium amalgam is zero. I am 100% sure about this :)
Molecular formula for sodium sulfide is "Na2S"
The molecular formula for sodium hypochlorite is NaClO.
The molecular formula of sodium stannate is Na2SnO3, and the molecular formula of sodium aluminate is NaAlO2.
The molecular formula of sodium aluminate is NaAlO2.
The molecular formula of sodium thiosulfate is Na2S2O3.
The molecular formula of sodium boride is Na3B. It is composed of three sodium atoms and one boron atom.
For sodium oxide, the empirical formula is the same as the formula unit, Na2O. (If any formula unit or molecular formula contains an atomic symbol with no following subscript, the empirical and actual formulas will be the same.)
Equation: NaI + AgNO3 ----> NaNO3 + AgI
The chemical formula of sodium hypochlorite is NaClO.
The chemical formula of sodium sulfate is Na2SO4.
Sodium amalgam is produced by dissolving sodium metal in mercury. This amalgam can be used in organic synthesis reactions as a reducing agent. When sodium amalgam reacts with water, it produces hydrogen gas and sodium hydroxide.