Oxygen and Nitrogen Melting/Boiling Point Discrepancy

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

WordSword

Full Member
7+ Year Member
Joined
Jun 9, 2014
Messages
44
Reaction score
7
Oxygen has a higher boiling point than nitrogen presumably because of the greater polarizability of Oxygen. Yet, Nitrogen has a higher melting point than oxygen.

I'm not sure why.

Here's my best attempt: Nitrogen has shorter bonds, so it may form a crystal lattice that is more stable than oxygen. The closer packing of the nitrogen allows for a greater interactions between the london-disperson forces.

Can anyone comment if this might be a good explanation?
 
Top