Cr3Si2 is the empirical formula for a compound containing chromium and silicon an has 73.52 mass percent chromium.
Cr2O3
MgO
Two Chromium Atoms, and 3 Oxygen Atoms. (Cr2O3)
No: The molecular formula is never smaller than the empirical formula.
The molecular formula of this compound is N2H2. This is obvious because the empirical formula of a compound is the lowest positive integer ratio of atoms present.
Cr2O3
An example is the chromium chloride: CrCl2.
MgO
This compound is the chromium phosphate.
X3Y is the empirical formula
An empirical formula has no data about the structure of a compound.
Two Chromium Atoms, and 3 Oxygen Atoms. (Cr2O3)
This compound is silicon dioxide - SiO2.
An empirical formula refers to the chemical formula that indicates the simplest ratio of atoms in a compound. Two different compounds may have the same empirical formula.
The empirical formula is representative for the chemical composition of a compound; the structural formula is representative for the spatial structure of the compound.
This molecular formula is C9H12.
NaF is the empirical formula