The gas that liquefies first, when cooled from 500K to its critical temperature given in parenthesis is

The gas that liquefies first, when cooled from 500K to its critical te

1.	The gas that liquefies first, when cooled from 500K to its critical temperature given in parenthesis is
Answer» `O_2( 154.3 K)` `NH_3 (405.5K)` `CO_2 ( 304.1 K)` `N_2 (126.0K)` ANSWER :B