18 Ar 39.948

Argon

Category: Noble gas | State: Gas

Atomic Properties

Atomic Number 18
Atomic Mass 39.948
Electronic Configuration [Ne] 3s² 3p⁶

Periodic Table Placement

Group 18
Period 3
Block p-block

Physical Properties & Discovery

Melting Point -189.3°C
Boiling Point -185.9°C
Density 0.0017837 g/cm³
Discovered By Lord Rayleigh & William Ramsay (1894)

Frequently Asked Questions about Argon