Group 18 elements or noble gases are the seven chemical elements of the periodic table with a closed-shell electronic configuration. The Group-18 elements like helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og) are colorless, orderless, monoatomic gases with very low melting point and boiling point.Due to lack of reactivity, they are also called inert gas. The properties, occurrence, compounds, and uses of Group-18 elements are derived below the individual topics in learning chemistry.
Neon Element InformationNeon (Ne), chemical element, inert gas, or noble gas of Group 18 of the periodic table discovered through its physical properties like...
Helium in Periodic Table
Helium (He), chemical symbol He, atomic number 2, the second most abundant chemical element in the earth universe after hydrogen (H 76...