Tellurium

Metalloid · 127.6 u · group 16, period 5

Tellurium · Te

Atomic number52

SymbolTe

CategoryMetalloid

Standard stateSolid

Group · Period · Block16 · 5 · p

Electron configuration[Kr]5s2 4d10 5p4

Atomic mass127.6 u

Atomic radius206 pm

Protons / Neutrons / Electrons52 / 76 / 52

Shells (e⁻ per shell)2, 8, 18, 18, 6

Electronegativity (Pauling)2.1

Ionization energy9.01 eV

Electron affinity1.971 eV

Oxidation states+6, +4, -2

Melting point722.7 K · 449.5 °C

Boiling point1.26e+3 K · 987.9 °C

Density6.232 g/cm³

Year discovered1782

CPK color

#D47A00

State at room temp (25 °C)

solid

Position