Write a note on $p$-block elements of the periodic table.

(N/A) Elements in which the last electron enters the $p$-orbital are known as $p$-block elements. The general electronic configuration of $p$-block elements ranges from $ns^2 np^1$ to $ns^2 np^6$.
$p$-block elements comprise groups $13$ to $18$. Along with $s$-block elements,they are called representative or main group elements. The outermost electronic configuration varies from $ns^2 np^1$ to $ns^2 np^6$ in each period.
Noble Gases (Group-$18$): These elements exhibit very low chemical reactivity due to their stable octet configuration.
Halogens (Group-$17$): These are highly reactive non-metals that precede the noble gases.
Chalcogens (Group-$16$): Elements of group $16$ are known as chalcogens. They have high electron gain enthalpy and tend to accept $2$ electrons to achieve a stable noble gas configuration. This group includes $O, S, Se, Te, Po$.
Metallic and Non-metallic Properties: In the $p$-block,non-metallic character increases from left to right across a period,while metallic character increases from top to bottom down a group.