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Nonmetals also have high electron affinity. This means that it is energetically favorable to add an electron to a nonmetal. So, nonmetals can be easily reduced. Metals tend to have low electron affinity so it is more difficult to add electrons (or reduce them). In short: Metals have low ionization energies and low electron affinities so they are readily oxidized. Nonmetals have high ionization energies and high electron affinities so they are readily reduced.
Optibor Boric Acids prevent the oxidation of metal surfaces in welding, brazing, or soldering. They are also used as a source of boron for strengthening metal alloys and steel. Corrosion inhibition Optibor Boric Acids are incorporated in many aqueous and non-aqueous systems requiring corrosion inhibition, lubrication or thermal oxidative stabilization.