Q

# Write the order of thermal stability of the hydrides of Group 16 elements.

7.14      Write the order of thermal stability of the hydrides of Group 16 elements.

Hydrides of group 16 elements become less thermally stable as we go down the group, i.e., $H_2O$> $H_2S$> $H_2Se$> $H_2Te$> $H_2Po$. This is due to M-H bond dissociation energy decreases down the group as we increase in the size of the atom.