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While ionic and covalent bonds are the primary types formed during chemical reactions, metallic bonding is distinct. It's not formed during a traditional chemical reaction where atoms gain, lose, or share electrons. Instead, metallic bonding occurs within a solid metallic lattice due to the delocalization of valence electrons, which are free to move throughout the entire structure. This electron sea creates strong attractions between the positively charged metal ions, resulting in unique properties like high conductivity.