" Stability of hydrides of carbon family - "

Statement-1 :The thermal stability of hydrides of carbon family is in order: CH_(4)gtSiH_(4)gtGeH_(4)gtSnH_(4)gtPbH_(4) Statement-2: E-H bond dissociation enthalpies of the hydrides of carbon family decrease down the group with increasing atomic size.

The thermal stability of hydrides of oxygen family is in order :

Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of M-H bond requires lesser energy in O-H than S-H .

The thermal stability of the hybrides of oxygen family is in order :

The correct order of acidity of hydrides of oxygen family:

Thermal stability of hydrides of alkali metals -

The correct order of thermal stability of hydrides of group 15 is