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Bismuth Trioxide - Bi₂O₃

Classification: Oxide
Atomic numbers: 83 & 8
Atomic weight: 466
Melting point (C): 860
Boiling point (C):
Density (g/cm3): 8.5
Refractive index (n=): 1.81-2.00
Hardness (Mosh-scratch): 2-3
Crystal structure: Hexagonal-rhombohedral: (10TT) rhomb, Orthorhombic (artificial): (hkO) prism
Color (solid): Straw yellow
Cleavage: Basal: (0001)