Health is wealthMercury – Lowest Melting Point
A metallic bond is characterized by free electrons and generally forms a specific geometric pattern of compact arrangement of atoms. All metals except mercury thus exist in a solid state at room temperature. Mercury belongs to the Zinc group of elements. These have completely filled up atomic orbitals. It becomes very difficult to knock out these electrons from their orbitals and they form metallic bonds. Therefore, mercury does not have a specific crystal structure and is the only metal that is liquid.
