Unfortunately, there is no chemical compound with the formula Hg2Fe2. Therefore, we cannot provide information about this compound such as its common name, English name, atomic mass, molecular structure, ion structure, physical properties, chemical properties, common chemical equations, and methods of preparation in the lab and industry.
Hg and Fe are the symbols of two separate chemical elements on the periodic table, namely Mercury and Iron respectively. Each of these elements has its own properties and characteristics.
If you want to learn about a specific chemical compound, please make sure that you provide the correct formula. You may also want to learn about each individual element – Hg and Fe, or a compound of them.