Statement (I) : Acidic strength of H2S > H2OStatement (II) : S-H bondenergy < O-H bond energy

In the hydrides of 14th , 15th , 16th & 17th group ,Acidic strength is decided by X-H bond enthalpy but not by X-H bond polarityDown the group as the size of atom increases , affinity with H-atom decreases,X-H bond enthalpy decreases and thus acidic strength and reducing power increases