Question

Inert gases belong to which block of the periodic table?

Answer 1

Inert gases:-

• Inert gases or also called noble gases are the elements present in group $18$ of the periodic table.
• These gases are called inert because they are non-reactive in nature as they have completely filled outermost shells.
• These elements have the general electronic configuration of ${\mathrm{ns}}^2{\mathrm{np}}^6$
• Hence they belong to the $\mathrm{p}-\mathrm{block}$, except for Helium as it has 2 electrons and its electronic configuration of $1{\mathrm{s}}^2$.
• So, Helium belongs to the s-block.
• The elements of group $18$ are:- Helium$\left(\mathrm{He}\right)$, Neon$\left(\mathrm{Ne}\right)$, Argon$\left(\mathrm{Ar}\right)$, Krypton$\left(\mathrm{Kr}\right)$, Xenon$\left(\mathrm{Xe}\right)$and Radon$\left(\mathrm{Rn}\right)$.

Therefore, inert gases belong to the $\mathrm{p}-\mathrm{block}$ of the periodic table.