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 :)
The oxidation number of oxygen is -1 in all peroxides.
Since Sodium peroxide is a neutral molecule, its net charge is zero.
If we make its, its charge equation, then we get,
2*1 + 2x=0 (since oxidation state of sodium is always 1)
=>2x=-2
=>x=-1.
Here x is the oxidation number of oxygen in the sodium peroxide molecule.
There is actually no formula for a sodium amalgam because it is a mixture of two elements, and not a compound. However, in equations it can be written as Na + Hg
The chemical formula of sodium sulfate is Na2SO4.
The chemical formula of sodium hypochlorite is NaClO.
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.)
The molecular formula is C18H29NaO3S
sodium peroxide
Sodium amalgam is an ALLOY of sodium with mercury. It is not a chemical compound and does not have a molecuar formula.
Molecular formula for sodium sulfide is "Na2S"
What is the molecular formula of sodium oxide
The chemical formula of sodium sulfate is Na2SO4.
Amalgam is the word for a mercury alloy. so sodium amalgam is a mixture of sodium and mercury.
The chemical formula of sodium hypochlorite is NaClO.
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.)
The chemical formula of sodium hypochlorite is NaClO.
Na2Cr2O4
NaAlO2
NaB5
Sodium carbonate has sodium, carbon and oxygen in it, and the molecular formula is NaCO. Sodium hydroxide is consists of the elements sodium, oxygen and hydrogen and it has the molecular formula NaOH. One of the common features of both these compounds are being alkali in aqueous medium.