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Brellium Essay Preview: Brellium Report this essay Be Protons = 4 Electrons = 4 Atomic # = 4 Neutrons = 5 Atomic mass = 9 Valance Electrons = 2 Beryllium has one of the highest melting points of the light metals. Beryllium is a steel grey, strong, light-weight and brittle, alkaline earth metal. Beryllium and.