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Potassium Iodide - KI
Classification: Iodide
Atomic numbers: 19 & 53
Atomic weight: 166
Melting point (C): 723
Boiling point (C): 1420 (1330)
Density (g/cm3): 3.13
Refractive index (n=): 1.677
Hardness (Mosh-scratch): 2-3
Crystal structure: Isometric-normal: (100) cubic
Color (solid): White
Cleavage: Cubic: (001)