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Tungsten Selenide - WSe₂

Classification: Selenide
Atomic numbers: 74 & 34
Atomic weight: 341.84
Melting point (C): 1500 est/
Boiling point (C):
Density (g/cm3): 12 est.
Refractive index (n=):
Hardness (Mosh-scratch): 5-6
Crystal structure: Hexagonal-normal: (10T0) prism
Color (solid): Grey
Cleavage: Basal: (0001)