Regrettably, it appears you might be mistaken, as there is no such compound as ZnS2O5 in chemistry. This is not the correct chemical formula for any specific substance. Based on the formula you provided, it appears you are thinking of a substance containing the elements Zn (zinc), S (sulfur), and O (oxygen), but such a ratio of elements does not exist in reality.
You might want to recheck and provide us with a correct chemical formula so that we can help you understand more about that substance. Some examples of compounds you might want to research include ZnSO4 (zinc sulfate) or ZnS (zinc sulfide).
Remember, to determine a chemical substance, you need to know the exact number of atoms of each element in the molecule.