Atomic Properties
- Atomic Number
- 52
- Atomic Mass
- 127.6000 u
- Electron Configuration
- [Kr] 4d10 5s2 5p4
- Electronegativity
- 2.10
- Block
- p-block
- Group
- 16
- Period
- 5
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 722.66 K
- Boiling Point
- 1261.00 K
- Density
- 6.2400 g/cm³
About Tellurium
Rare metalloid; used in solar cells and thermoelectric devices.
Isotopes of Tellurium
Tellurium has 8 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 120Te | 120 | 119.9040593 | 0.0900% | Stable |
| 122Te | 122 | 121.9030435 | 2.550% | Stable |
| 123Te | 123 | 122.9042698 | 0.8900% | Stable |
| 124Te | 124 | 123.9028171 | 4.740% | Stable |
| 125Te | 125 | 124.9044299 | 7.070% | Stable |
| 126Te | 126 | 125.9033109 | 18.84% | Stable |
| 128Te | 128 | 127.9044613 | 31.74% | Stable |
| 130Te | 130 | 129.9062227 | 34.08% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)