Atomic Element Z = 52 • Metalloid
Tellurium (Te) — Atomic Data, Electron Shells & Reactions
Tellurium (symbol Te, atomic number 52) has a standard atomic weight of 127.6 u and ground-state configuration [Kr] 4d10 5s2 5p4.
Atomic Number (Z)
52
IUPAC Symbol
Te
Standard Atomic Weight
127.6 g/mol
Period / Group / Block
5 / 16 / p-block
Condensed Electron Config
[Kr] 4d10 5s2 5p4
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p4
Principal Shell Occupancy
[2, 8, 18, 18, 6]
Pauling Electronegativity
2.1
First Ionization Energy
869 kJ/mol
Covalent Radius
138 pm
Melting Point
722.66 K (449.51 °C)
Boiling Point
1261 K (987.85 °C)
Density
6.232 g/cm³
Oxidation States
+6, +4, -2
Te (Z=52) — Valence shell highlighted in vermilion