Element Gas State

Name Symbol Atomic Number Group Period
Argon Ar 18 18 3
Chlorine Cl 17 17 3
Fluorine F 9 17 2
Helium He 2 18 1
Hydrogen H 1 1 1
Krypton Kr 36 18 4
Neon Ne 10 18 2
Nitrogen N 7 15 2
Oxygen O 8 16 2
Radon Rn 86 18 6
Xenon Xe 54 18 5
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