Antimony (Sb) has several isotopes, but the most notable ones are: 1. **\(^{121}\text{Sb}\)**: This is the most stable and abundant isotope of antimony, accounting for about 57% of natural antimony. It has a half-life that is effectively stable as it doesn't undergo radioactive decay. 2. **\(^{123}\text{Sb}\)**: This isotope makes up about 42% of natural antimony and is also stable.
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