Question

Oxygen and sulphur at at the same group in the periodic table and they form bonding with hydrogen.H2O and H2S

but H2O is liquid and H2S is gas at room temperature why?​

Answer 1

Below.

Step-by-step explanation:

Because of the hydrogen bonding that occurs in water. Oxygen is more electronegative than sulphur and forms inter molecular bonding between the H+ and O- ions in the water. This does not occur in H2S.