Atomic Number: 51

Atomic Weight: 121.760

Melting Point: 903.78 K (630.63°C or 1167.13°F)

Boiling Point: 1860 K (1587°C or 2889°F)

Density: 6.685 grams per cubic centimeter

Phase at Room Temperature: Solid

Element Classification: Semi-metal

Period Number: 5

Group Number: 15

Group Name: Pnictogen

The two Antimony isotopes are used for the production of medical radioisotopes. Sb-121 can be used for the production of I-124, although this medical radioisotope is usually produced via Te-124. Sb-121 and Sb-123 can both be used for the production of I-123, although the most common production route is via Xe-124 or Te-123.

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