Final answer:
A metallic bond involves the sharing of delocalized electrons among metal atoms, while an ionic bond involves the transfer of electrons to form positive and negative ions.
Step-by-step explanation:
A metallic bond is formed between two metal atoms when their outer electrons are delocalized and shared among all the atoms in a metal lattice. This results in a sea of electrons surrounding the metal cations. In contrast, an ionic bond is formed when one or more electrons are transferred from one atom to another, resulting in the formation of positive and negative ions. The attraction between these opposite charges holds the ions together in an ionic compound.
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