No, beryllium would not have properties more similar to magnesium. Beryllium is an alkaline earth metal in the second period of the periodic table, while magnesium is an alkaline earth metal in the third period. The properties of elements within a period generally change more gradually than the properties of elements within a group.

Therefore, beryllium would have properties more similar to elements in the second period, such as boron and carbon, than to magnesium. In fact, beryllium is often considered to be the lightest alkaline earth metal and has some properties that are more similar to aluminum, which is in the same period as beryllium.