Answer : The empirical formula is
.
Explanation :
Molecular formula : It is represented by the actual number of the atoms of all the elements present in a compound.
Empirical formula : It is represented by the simplest whole number of the atoms of all the elements present in a compound.
The given molecular formula is
.
For determining the empirical formula, we need to determine the valency which is divided by each element to get the empirical formula.
In the given formula, the valence is 1.
So, the empirical formula is
.