Antimónio (Sb)
Antimónio is the chemical element with atomic number 51 and symbol Sb. It is a semimetal in period 5, group 15, with a standard atomic weight of 121.76 u.
Dados essenciais
- Z
- 51
- Atomic weight
- 121.76 u
- Category
- semimetal
- State at 298 K
- Solid
- Occurrence
- primordial
- Discovered
- —
- CAS
- 7440-36-0
Propriedades medidas
| Property | Value | Source |
|---|---|---|
| Electronegativity | 2.05 | National Center for Biotechnology Information (NIH) |
| Melting point | 903.78 K | National Center for Biotechnology Information (NIH) |
| Boiling point | 1,860 K | National Center for Biotechnology Information (NIH) |
| Density stp | 6.685 g/cm³ | National Center for Biotechnology Information (NIH) |
| Atomic radius empirical | 206 pm | National Center for Biotechnology Information (NIH) |
| Ionization energy 1st | 833.6 kJ/mol | National Center for Biotechnology Information (NIH) |
| Electron affinity | 103.2 kJ/mol | National Center for Biotechnology Information (NIH) |
Configuração eletrónica
- Noble gas notation
- [Kr] 4d¹⁰ 5s² 5p³
- Full notation
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p³
- Electrons per shell
- 2, 8, 18, 18, 5