Question

why h2o is a liquids and h2s is a gas

Answer 1

H20 is a liquid due to Hydrogen bonding.

Answer 2

Hellooo!!

¤¤¤ In water hydrogen bonding is responsible for the association of molecules, in turn to abnormally high boiling point.
¤¤¤ Hence H20 is liquid.

¤¤¤ Electronegativity of sulfur being less than that of oxygen, hydrogen bonding won’t be observed. No intermolecular association and hence H2S is a gas.

hope it helps