Final answer:
A metallic bond is a type of chemical bond characterized by the attraction between positive metal ions and a sea of delocalized electrons, which is distinct from ionic, covalent, or hydrogen bonds.
Step-by-step explanation:
The type of chemical bond that consists of positive ions in a sea of electrons is a metallic bond. Metallic bonds are characteristic of metallic elements, where metal ions are surrounded by a free-flowing 'sea' of electrons. This 'sea' is responsible for high electrical and thermal conductivity as well as the malleability and ductility of metals.
Ionic bonds are different as they are the electrostatic attraction that forms between ions with opposite charges, such as in sodium chloride. Covalent bonds involve the sharing of electrons between nonmetal atoms, while hydrogen bonds occur typically between a hydrogen atom in a polar molecule and another electronegative atom.