Question

the boiling point of HF is 1. higher than, 2. lower than, 3. similar to the boiling point of H2 , and it is 1. higher than , 2. lower than , 3. similar to the boiling point of N2​

Answer 1

The boiling point of HF is 67.1°F and H2 is -423.2°F so HF is HIGHER than H2 and N2 boiling point is -320.4°F so HF is again HIGHER than N2.

Answer 2

Boiling point of HF is greater than both H₂ and N₂.

Step-by-step explanation:

Boiling point is the temperature at which the vapour pressure of a liquid becomes equal to atmospheric pressure.

Higher the intermolecular force of attractions between molecules of liquid, higher the boiling point.

Hydrogen molecule and nitrogen molecules are non polar covalent molecules. They have weak london dispersion forces in between them.

However in HF there is intermolecular hydrogen bond, which makes the HF molecule to have higher boiling point than both of them.