Group 18 elements p-block elements

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About Group 18 Elements:

Zero group (group-18) of the periodic table constitutes Helium (He), Neon (Ne) Argon (Ar), Krypton (Kr), Xenon (Xe) and Radon (Rn). These are all monoatomic gas.
Because of there chemical inertness they are
also known as inert gasses and have been placed in a separate group in the periodic table called Zero group. Except radon, all other gasses are present in the atmosphere in very small quantities. Thus, they are known as rare gases or arogens. Now-a-days, several compounds of Kr and Xe have been prepared. Therefore, inert gases are now called Nobel gasses as they show reactivity to some extent.

 

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