Name |
Value |
Symbol |
Ar |
Atomic Number |
18 |
Atomic Mass |
39.94 |
Number of Protons |
18 |
Number of Electrons |
22 |
Number of Neutrons |
18 |
Melting Point |
-189.34 |
Boiling Point |
-185.848 |
Normal Phase |
Gas |
Family |
Noble Gas |
Period |
3 |
Group |
18 |
Origin of Name |
From the Greek word "Argos" meaning "inactive" |
Date & Place of Discovery |
Lord Rayleigh and Sir William Ramsay |
Interesting Facts |
|
Common Uses |
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