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Hydrogen telluride
Hydrogen selenide Hydrogen telluride
General
Systematic name	hydrogen telluride
Other names	hydrotelluric acid tellane tellurium hydride
Molecular formula	H2Te
Molar mass	129.6158 g mol−1
Appearance	colourless gas
CAS number
Properties
Density and phase	3.310 g/l, gas.
Solubility in water	0.70 g/100 mL
Melting point	−51 °C
Boiling point	−4 °C (unstable above 0 °C)
Acidity (p''K''a)	?
Structure
Molecular shape	planar
Dipole moment	? D
Hazards
MSDS	External MSDS
Main hazards	toxic
NFPA 704	?
Flash point	? °C
R/S statement	R: ? S: ?
RTECS number
Supplementary data page
Structure and properties	''n'', εr, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Related compounds
Other group 16 hydrogen compounds	H2O H2S H2Se H2Po
Other tellurides	Na2Te Ag2Te
Related compounds	?
Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa)

'Hydrogen telluride' is the chemical compound with the formula H₂Te. It is the simplest hydride of tellurium.

Contents

Physical description

Synthesis

Popular culture

See also

External links

Physical description

Most compounds with Te-H bonds are unstable with respect to loss of H₂, and H₂Te follows this pattern. H₂Te is chemically similar to hydrogen selenide, both are reactive, acidic species with H-X-H angles approaching 90°.

Synthesis

H₂Te is prepared by the acidification of salts of Te²⁻, such as Al₂Te₃ and Na₂Te. Na₂Te can be generated by the reaction of Na and Te in anhydrous ammonia.

Popular culture

The strong, unpleasant odour of H₂Te was remarked upon in a scene in the ''Doctor Who'' serial ''The Krotons'' (1968/9), when it was described as "the worst smell in the world".

See also

★ Dimethyltelluride

External links