Regrettably, there isn’t any chemical compound with the formula H2Cr5O6 in reality. This might be due to a misunderstanding or a mistake in writing the chemical formula.
Chromium (Cr) is a chemical element in the periodic table, with the atomic number 24. It has several oxides like CrO3, Cr2O3, and CrO2. The ability to form various compounds is due to the oxidation and reduction properties of Cr.
Hydrogen (H2) is also a chemical element, which can form compounds with many other elements such as Oxygen (O2) to create water (H2O).
For Chromium compounds, they usually have different atomic ratios. For example, in Chromic acid (H2CrO4), the ratio between Hydrogen, Chromium, and Oxygen is 2:1:4.
However, the formula H2Cr5O6 does not abide by the rules of atomic ratios in chemistry.
In general, when you encounter a chemical formula that you are unsure about, please verify again or refer to a reliable information source.