Are there any metals that can form covalent bonds?
Under the right conditions and with the right “partners” – all metals are capable of forming covalent bonds. It is just that for many of them, their tendency is strongly otherwise. Or, stated another way… never say “never” about covalence. But it is OK to sometimes say, “I doubt it.” addendum: Fallen Dream and Prien, I hate to disagree, but there are times when in fact metals DO go covalent on you. For instance, take a look at flourine – EXTREMELY electronegative. Add calcium – strongly electropositive… but CaF2 is a covalent compound. Take a good look at Molybdate and Vanadate in strong acid. The anion is MoO6 or VO6, and the darned metal-oxide bonds don’t behave like ordinary ionic bonds. The damned electrons DO INDEED go delocalized on you. Which can ONLY happen in a covalent mix. If you have access to a university library, see if you can find some studies from the late 1960s/early 1970s on Electron Spin Resonance studies of Molybdate, Vanadate, and Tungstate anions. Delocalizat
