Question

a liquid has its boiling point above the room temp whereas a gas has its boiling point below the room temp. Why? ​

Answer 1

Take for example water.its melting point(0 degree celcius).so at room temperature it is a liquid.but iron's melting point is above room temperature. so it is a solid.similarly oxygen is a gas at room temperature coz its melting as well as boiling point is below room temperature

Answer 2

The boiling point of a liquid depends on the intermolecular forces present between the atoms or molecules in the liquid since you must disrupt those forces to change from a liquid to a gas. The stronger the intermolecular forces, the higher the boiling point. And due to the difference in the intermolecular forces in liquid and gas both have different boiling points.

hope it helps !