Apologies, but the compound Be2SO5 does not exist in chemistry. Beryllium has a valency of +2 and its second ionization process is very strong, so it never forms a compound with a valency of +1 under normal conditions. Moreover, sulfuric acid has a valency of -2 and cannot be split to create a valency of -1.
Therefore, Be2SO5 is not a valid chemical compound and cannot be introduced or studied in a high school chemistry lesson.
For other chemistry lectures, we should focus on existing and recognized chemical compounds, such as BeSO4 (beryllium sulfate) or BeO (beryllium oxide), to help students better understand their properties and specific applications in daily life and in the industry.