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.
CH2O because you have to divide by the number they all have in common which is 6