Co2 can be easily liquified and solidified. Why?
Boiling point and freezing point of CO2 is lowest among normal gases we use, that is the reason it is easily liquefied and solidified.
Nitrogen -195.79oC -210.00oC
Oxygen -182.95oC -218.79oC
Argon -185.85oC -189.35oC
Carbon Dioxide -57oC -78oC
Neon -246.08oC -248.59oC
Helium -268.93oC -272.20oC
Krypton -153.22oC -157.36oC
Hydrogen -252.87oC -259.14oC
Xenon -108.12oC -111.70oC