
What is the empirical formula?
Answer:
Hi, There!
- ,the empirical formula of a chemical is a simple expression of the relative number of each type of atom (called a chemical element)
- Empirical formula is defined as the formula of a compound which gives the simple whole number ratio of the atoms of various elements present in one molecule of compound.
Hope this Helps!

Mostly in my opinion I think it’s the secound one