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Lead telluride facts for kids

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Lead telluride
Other names Lead(II) telluride
CAS number 1314-91-6
PubChem 4389803
Molecular formula PbTe
Molar mass 334.80 g/mol
Appearance gray cubic crystals.
Density 8.164 g/cm3
Melting point

924 °C, 1197 K, 1695 °F

Solubility in water insoluble
Band gap 0.25 eV (0 K)
0.32 eV (300 K)
Electron mobility 1600 cm2 V−1 s−1 (0 K)
6000 cm2 V−1 s−1 (300 K)
Crystal structure Halite (cubic), cF8
Space group Fm3m, No. 225
Lattice constant a = 6.46 Angstroms
Octahedral (Pb2+)
Octahedral (Te2−)
Std enthalpy of
formation ΔfHo298
-70.7 kJ·mol−1
Std enthalpy of
combustion ΔcHo298
110.0 J·mol−1·K−1
Standard molar
entropy So298
50.5 J·mol−1·K−1
EU classification Repr. Cat. 1/3
Harmful (Xn)
Dangerous for the environment (N)
R-phrases R61, R20/22, R33, R62, R50/53
S-phrases S53, S45, S60, S61
Flash point Non-flammable
Related compounds
Other anions Lead(II) oxide
Lead(II) sulfide
Lead selenide
Other cations Carbon monotelluride
Silicon monotelluride
Germanium telluride
Tin telluride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Lead telluride, also known as lead(II) telluride, is a chemical compound. Its chemical formula is PbTe. It contains lead and telluride ions. The lead is in the +2 oxidation state.


Lead telluride is a gray crystalline solid. It reacts with strong acids to make toxic hydrogen telluride and toxic lead salts.


It may be made by melting lead and tellurium together.


It is used as a semiconductor and an infrared detector.

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