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Which atom is most likely to form a metallic bond?

aluminum (Al)
helium (He)
phosphorus (P)
carbon (C)

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Answered by GPT-5 mini AI
Aluminum (Al).

Al is a metal and forms metallic bonds — its valence electrons are delocalized over a metal lattice. Helium is an inert noble gas, and carbon and phosphorus are nonmetals that typically form covalent bonds.