Q. 144.1( 33 Votes )

Write the order o

Answer :

The enthalpy of dissociation of H-E bond (E= O, S, Se, Te, Po) in the hydrides decreases down the group. Hence, the thermal stability of the hydrides decreases down the group. The thermal stability is in the order H2O > H2S> H2Se> H2Te >H2Po.

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