Estanho (Sn)
Estanho is the chemical element with atomic number 50 and symbol Sn. It is a metal pós-transição in period 5, group 14, with a standard atomic weight of 118.71 u.
Dados essenciais
- Z
- 50
- Atomic weight
- 118.71 u
- Category
- metal pós-transição
- State at 298 K
- Solid
- Occurrence
- primordial
- Discovered
- —
- CAS
- 7440-31-5
Propriedades medidas
| Property | Value | Source |
|---|---|---|
| Electronegativity | 1.96 | National Center for Biotechnology Information (NIH) |
| Melting point | 505.08 K | National Center for Biotechnology Information (NIH) |
| Boiling point | 2,875 K | National Center for Biotechnology Information (NIH) |
| Density stp | 7.287 g/cm³ | National Center for Biotechnology Information (NIH) |
| Atomic radius empirical | 217 pm | National Center for Biotechnology Information (NIH) |
| Ionization energy 1st | 708.6 kJ/mol | National Center for Biotechnology Information (NIH) |
| Electron affinity | 115.8 kJ/mol | National Center for Biotechnology Information (NIH) |
Configuração eletrónica
- Noble gas notation
- [Kr] 4d¹⁰ 5s² 5p²
- Full notation
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p²
- Electrons per shell
- 2, 8, 18, 18, 4