52 - Tellurium metalloid

Discovered by Franz von Reichenstein in 1782

  • Atomic Radius (Å)
  • Cividis
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.

 Shell Electrons Orbitals
122 in 1s
282 in 2s + 6 in 2p
3182 in 3s + 6 in 3p + 10 in 3d
4182 in 4s + 6 in 4p + 10 in 4d
562 in 5s + 4 in 5p
TelluriumTeElectron 1Electron 2Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 16Electron 17Electron 18Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 16Electron 17Electron 18Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6
128  u Atomic Mass
1.4  Å Atomic Radius
1.26k  K Boiling Point
16 Group
-2, 2, 4, 6 Common Oxidation States
1.38  Å Covalent Radius
6.24  g/cm³ Density
190  kJ/mol Electron Affinity
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p4 Electron Configuration
[Kr] 4d10 5s2 5p4 Electron Configuration (semantic)
2.1 Electronegativity
52 Electrons
9.01  eV First Ionization Energy
-2, -1, 4, 6 ICSD Oxidation States
869.3, 1790, 2698, 3610, 5668, 6820, 13200  kJ/mol Ionization Energies
723  K Melting Point
92 Mendeleev Number
25.7  J/(mol·K) Molar Heat
5 Number of Shells
6 Electron Valency
76 Neutrons
52 Atomic Number
29 Number of Isotopes
-2, 2, 4, 5, 6 Oxidation States
5 Period
Solid Phase
52 Protons
2, 8, 18, 18, 6 Electron Shell Occupations