Ar
Argon
Z 18 39.95 g/molNoble Gas
Group
18
Period
3
Block
p
Occurrence
Exploding massive stars 56%Exploding white dwarfs 44%Geochemical class: Atmophile
Biological Role
---
History
1895 (discovery, isolation)
John William Strutt, William Ramsay
Named By
John William Strutt
Latin Name
Argon
Abundance
Solar System0.009257%92.567 ppm
x
Sun0.007087%70.874 ppm
x
Meteorites< 0.0001%0.00133 ppm
x
Earth's crust0.00035%3.5 ppm
x
Oceans< 0.0001%0.45 ppm
x
Humans---
x