AP EAMCET Medical 24 Apr 2019 Shift 1 Paper

Which of the following statements are correct for hydrides of 16th group elements?
I) Boiling point is highest for water and lowest for hydrogen sulphide
II) Bond dissociation enthalpy is highest for water and lowest for hydrogen sulphide
III) Reducing property increases from H2S to H2Te
IV) ΔfH (Enthalpy of formation) is more negative for H2O and more positive for H2Te