Tin
Tin (锡, symbol Sn) is chemical element number 50, a Post-Transition Metal in period 5, group 14 of the periodic table, with a standard atomic weight of about 118.71. Silvery, malleable metal. Bronze, made from tin and copper, defined an entire era.
Properties
| Atomic number | 50 |
|---|---|
| Symbol | Sn |
| Atomic mass | 118.71 u |
| Category | Post-Transition Metal |
| Period | 5 |
| Group | 14 |
| Electron configuration | [Kr] 4d¹⁰ 5s² 5p² |
| Electronegativity | 1.96 |
| Covalent radius | 139 pm |
| Density | 7.287 g/cm³ |
| Melting point | 505.08 K |
| Boiling point | 2875 K |
| Discovery | Known since antiquity |
Overview
Silvery, malleable metal. Bronze, made from tin and copper, defined an entire era. Tin (Sn) is a Post-Transition Metal with atomic number 50, located in period 5, group 14. As a post-transition metal it is fairly soft with a low melting point, turning up in alloys, solders and coatings.
Its electron configuration is [Kr] 4d¹⁰ 5s² 5p², with 4 electrons in the outer shell, and an electronegativity of about 1.96 (Pauling). Around 25 °C it is usually a solid; it melts near 505.08 K (231.9 °C), boils near 2875 K (2601.9 °C), has a density around 7.287 g/cm³.
In industry and daily life it turns up in Structural / Alloys and Electronics / Semiconductors. It has been known since antiquity. Browse elements of the same category in the browse view.
Electron shells
Electrons per shell: 2 · 8 · 18 · 18 · 4
Main uses
- Structural / Alloys
- Electronics / Semiconductors
Hazard
Compounds containing Tin
No compounds in this knowledge base contain Tin yet.
Data sources
Atomic mass uses IUPAC (CIAAW) standard atomic weights; the covalent radius is from Cordero et al. (2008). Verify on the RSC Periodic Table, PubChem and Wikipedia. Educational reference only.