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Give reason for the following : Therm...

Give reason for the following :
Thermal stability decreases from `H_(2)O` to `H_(2)` Te.

Text Solution

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Thermal stability of hydrides decrease on moving down the group. This is due to the decrease in the bond dissociation enthalpy (H-E) of hydrides on moving down the group where E = O, S , Se, Te.
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