Write the order of thermal stability of the hydrides of group 16 eleme

1.	Write the order of thermal stability of the hydrides of group 16 elements
Answer» On moving down the group the thermal stability of the ELEMENTS decreases because - -There is an increase in the SIZE of the atoms as the atomic the number of shells increases when we move down the group. -So, the bond dissociation enthalpy of HYDRIDES H-E (the energy required to break the bond of one mole of elements) decreases. Thus the order of thermal stability will be; H2O > H2S > H2Se>H2TE> H2Po.

Write the order of thermal stability of the hydrides of group 16 elements

Answer»

On moving down the group the thermal stability of the ELEMENTS decreases because -

-There is an increase in the SIZE of the atoms as the atomic the number of shells increases when we move down the group.

-So, the bond dissociation enthalpy of HYDRIDES H-E (the energy required to break the bond of one mole of elements) decreases.

Thus the order of thermal stability will be; H2O > H2S > H2Se>H2TE> H2Po.