Answer
See explanation
Work Step by Step
The boiling points at $1$ atm are:
Argon ($Ar$): $-185.8^\circ\text{C}$
Oxygen ($O_2$): $-183.0^\circ\text{C}$
Nitrogen ($N_2$): $-195.8^\circ\text{C}$
Order of Condensation (from warmest to coldest):
Argon (Ar) — condenses first
Oxygen (O₂) — condenses next
Nitrogen (N₂) — condenses last
