#68 ErbiumErbium is a chemical element with symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Atomic mass:167.26 amu Melting point:1522.0 C (1795.15 K, 2771.6 F) Boiling point:2510.0 C (2783.15 K, 4550.0 F) Density:293 K:293 K: 8.795 g/cm3 |