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Group 18 elements

Group 18 of the periodic table contains these elements: Helium, Neon, Argon, Krypton, Xenon, Radon, Oganesson.

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Period: 1 2 3 4 5 6 7
Group: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Block: S P D F
Phase: Solid Liquid Gas

List of chemical elements (7)

Chemical elements
No. Symbol Element Atomic weight (u) Density (g/cm³) Melting point (K) Boiling point (K) Electronegativity Discovered
2HeHelium4.00260.17860.954.222-1868
10NeNeon20.17970.900224.5627.104-1898
18ArArgon39.7921.78483.8187.302-1894
36KrKrypton83.79823.749115.78119.9331898
54XeXenon131.2945.894161.4165.0512.61898
86RnRadon2229.73202211.52.21899
118OgOganesson2944.95-350-2002