Question

H2o is liquid while H2s is gas why?

Answer 1

H2s is a gas because at room temperature the forces and interactions between the molecules of hydrogen sulfide are very weak. 

Answer 2

Hey !!

Due to small size and high electronegativity of oxygen, molecules of water are associated through hydrogen bonding, resulting in its liquid state. On the other hand, H₂S molecule are not assosicated through H-bonding. Hence, it is a gas.

Hope it helps you !!