Tellurium (Te)
Tellurium
Tellurium (Te) is a metalloid in period 5, group 16. Its relative atomic mass is 127.6 and the molar mass of the atom is 127.6 g/mol.
Atomic number 52
Atomic mass 127.6
Molar mass 127.6 g/mol
Category Metalloid Solid
Properties of tellurium
| Atomic number | 52 |
|---|---|
| Symbol | Te |
| Latin name | Tellurium |
| Relative atomic mass | 127.6 |
| Molar mass | 127.6 g/mol |
| Group, period, block | 16, 5, p |
| Category | Metalloid |
| State at 20 °C | Solid |
| Electron configuration | [Kr] 4d¹⁰ 5s² 5p⁴ |
| Electronegativity (Pauling) | 2.1 |
| Atomic radius | 140 pm |
Electron configuration of tellurium
Electrons per shell
K2L8M18N18O6
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁴
Noble-gas notation
52 protons · 52 electrons[Kr] 4d¹⁰ 5s² 5p⁴
Formula and compounds of tellurium
Simple substanceTetelluriumMolar mass of Te: 127.6 g/mol
Chemistry not clicking? Try a lesson with a tutor
1-to-1 online chemistry lessons for KS3, GCSE and A-level. Your first lesson is a free trial.
Frequently asked questions
The relative atomic mass of tellurium is 127.6, so the molar mass of the atom is 127.6 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁴. Noble-gas notation: [Kr] 4d¹⁰ 5s² 5p⁴.