Antimony
Symbol, Uses, & Facts
stibnite
antimony (Sb), a metallic element belonging to the nitrogen group (Group 15 [Va] of the periodic table). Antimony exists in many allotropic forms (physically distinct conditions that result from different arrangements of the same atoms in molecules or crystals). Antimony is a lustrous silvery bluish white solid that is very brittle and has a flaky texture. It occurs chiefly as the gray sulfide mineral stibnite (Sb2S3).
| atomic number | 51 |
|---|---|
| atomic weight | 121.76 |
| melting point | 630.5 °C (1,166.9 °F) |
| boiling point | 1,380 °C (2,516 °F) |
| density | 6.691 gram/cm3 at 20 °C (68 °F) |
| oxidation states | −3, +3, +5 |
| electron configuration | 1s22s22p63s23p63d104s24p64d105s25p3 |
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