52TeTellurium127.603[Kr] 4d¹⁰ 5s² 5p⁴
metalloid
Tellurium
Tellurium is a chemical element with symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur.
A stylized shell model. Electrons are quantum objects, not particles following these literal paths. Sizes and motion are illustrative.
Electrons by shell
Electron configuration
4d10
5s2
5p4
36 is the [Kr] core total across four shells.
At a glance
- Atomic number
- 52
- Atomic mass
- 127.603 u
- Phase
- Solid
- Density
- 6.24 g/cm³
- Melting point
- 722.66 K
- Boiling point
- 1,261 K
- First ionization energy
- 869.3 kJ/mol
- Electronegativity
- 2.1
- Electron affinity
- 190.161 kJ/mol
- Molar heat capacity
- 25.73 J/(mol·K)
- Period
- 5
- Appearance
- Unavailable
Conditions and isotopes affect measured properties. Some properties of short-lived elements are predicted. Electronegativity uses the Pauling scale.
Keep exploring
Explore the stories, imagery, and reference data in more depth. Properties with no value in the reference are marked unavailable.