Question

give reasons why the thermal stability decreses from H2O to H2Te?​

Answer 1

Answer:

Thermal stability decreases from H2O to H2Te. The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O > H2S > H2Se > H2Te > H2Po. This is because M-H bond dissociation energy decreases down the group with the increase in the size of a central atom.

Answer 2

Thermal stability decreases from H2O to H2Te. The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O > H2S > H2Se > H2Te > H2Po. This is because M-H bond dissociation energy decreases down the group with the increase in the size of a central atom