Atomic NumberAtomic Number of Antimony
Atomic Number of Antimony is 51.
Chemical symbol for Antimony is Sb. Number of protons in Antimony is 51. Atomic weight of Antimony is 121.76 u or g/mol. Melting point of Antimony is 630,7 °C and its the boiling point is 1750 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Antimony
Antimony is one of the chemical elements which have been known since the prehistoric times. It is a light grey color metalloid. Its symbol is the Eye of Horus, which is a sign of royal existence and good health. The name of this chemical element comes from a Latin expression meaning not alone. This chemical element is quite toxic, and even in small amounts it can be very harmful. It exists on the surface of earth in mirco amounts, and it is usually mined from minerals like antimony sulfide. Antimony is often alloys with lead and tin, to produce stronger and harder materials. It produces a large number of compounds which have a variety of applications. They are used as flame retardants, as well as for producing batteries, cable sheathing, pullets, printing machinery, diodes, matches, veterinary preparations, and other kinds of products.
Uses of Antimony
Antimony, a semi-metallic element with the symbol Sb, is mostly preferred to alloy with lead and tin. It is used to increase hardness and strength. Also, it is widely used in flame retardants and in coverings for cables, as well as in batteries, bullets, plain bearings, organ pipes, pumps, paint, plastics, textiles, pottery, and solders. There is another use of antimony is in the manufacture of polyethylene terephthalate. Besides, it can be used in glass to remove microscopic bubbles. Antimony is employed in medicine and veterinary too. Stibine, also known as Stibane, is employed in the semiconductor industry.
Compounds with Antimony
- Sb4O10: Antimony pentoxide
- Sb2O4: Antimony tetroxide
- Sb(OH)3: Antimonous acid
- [Na3SbO3]4: Sodium antimonite
- Sb2S: Stibnite
- Ag3SbS3: Pyrargyrite
- SbF3: Trifluoride
- SbBr3: Antimony tribromide
- SbI3: Antimony triiodide
- SbCl3: Trichloride
- Sb2S3: Antimony(III) sulfide
- SbF5: Antimony pentafluoride
- SbCl5: Antimony pentachloride
- SbOCl: Antimony oxychloride
- InSb: Indium antimonide
- Ag3Sb: Silver antimonide
- SbH3: Stibine
Properties of Antimony Element
| Atomic Number (Z) | 51 |
|---|---|
| Atomic Symbol | Sb |
| Group | 15 |
| Period | 5 |
| Atomic Weight | 121.76 u |
| Density | 6.685 g/cm3 |
| Melting Point (K) | 903.78 K |
| Melting Point (℃) | 630,7 °C |
| Boiling Point (K) | 1860 K |
| Boiling Point (℃) | 1750 °C |
| Heat Capacity | 0.207 J/g · K |
| Abundance | 0.2 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Metalloid |
| Electronegativity (Pauling) χ | 2.05 |
| Ionization Energy (eV) | 8.6084 |
| Atomic Radius | 145pm |
| Covalent Radius | 138pm |
| Valence Electrons | 5 |
| Year of Discovery | prehistoric |
| Discoverer | unknown |