Atomic Properties
- Atomic Number
- 32
- Atomic Mass
- 72.6300 u
- Electron Configuration
- [Ar] 3d10 4s2 4p2
- Electronegativity
- 2.01
- Block
- p-block
- Group
- 14
- Period
- 4
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1211.40 K
- Boiling Point
- 3106.00 K
- Density
- 5.3230 g/cm³
About Germanium
Semiconductor; used in fiber optics and infrared optics.
Isotopes of Germanium
Germanium has 5 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 70Ge | 70 | 69.92424875 | 20.57% | Stable |
| 72Ge | 72 | 71.92207583 | 27.45% | Stable |
| 73Ge | 73 | 72.92345896 | 7.750% | Stable |
| 74Ge | 74 | 73.92117776 | 36.50% | Stable |
| 76Ge | 76 | 75.92140273 | 7.730% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)