| Property | Value |
|---|---|
| Atomic number | 51 |
| Atomic weight | 121.7601 amu |
| Element family | Semi-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 121Sb: 57.21%, 123Sb: 42.79% |
| Previous element | Tin |
| Next element | Tellurium |
| Density | 6.685 g/cm3 (STP) |
| Melting | 630.9 °C |
| Boiling | 1750 °C |
| Covalent radius | 1.4 Å |
| Van der Waals radius | 2.06 Å |
| Ionic radius | 0.76 Å |
| First ionization potential | 8.644 eV |
| Electron affinity | 1.047 eV |
| Electronegativity | 2.05 |
| Discovery year | 815 |
Antimony is an element number 51 from semi-metals family. Its symbol is Sb. Antimony atomic weight is 121.7601 amu. Sb stable and long lived isotopes are 121Sb: 57.21%, 123Sb: 42.79%. Antimony electronic configuration is 1s22s22p63s23p63d104s24p64d105s25p3. Sample compounds that contain Antimony are Sb2S3, Sb(NO3)3, Sb2O3, Pb5Sb4S11, SbCl3, Sb4O6.
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