Explain typical elements in a periodic table?

Hint : Typical elements are those which summarize or represent the periodic properties of their respective group without abnormalities. The elements belonging to the third period are typical elements. For example, sodium $ (Na) $ represents the properties of alkali metals.

Complete Step By Step Answer:
Typical elements are those elements of the periodic table which represent or summarize the periodic properties of their respective group without abnormalities. These properties include oxidation state, melting point, boiling point, electronegativity, electron affinity and density and so on. The s and p block elements which belong to the third period are called typical elements. Hence, a group of eight elements (two from s block and six from p block) are typical elements. This group includes sodium $ (Na) $ , magnesium $ (Mg) $ , aluminium $ (Al) $ , silicon $ (Si) $ , phosphorous $ (P) $ , sulfur $ (S) $ , chlorine $ (Cl) $ and argon $ (Ar) $ . These elements are also called representative elements.

Additional Information:
The periodic table is divided into four parts namely s, p, d and f block elements. Moreover, the elements present in the periodic table are further divided into seven periods and eighteen groups. The study of Periodic properties also includes ionization energy, atomic radius, metallic and non-metallic character, oxidation and reduction potential.

Note :
It is important to note that typical elements are those elements which summarize or represent the periodic properties of their respective group without abnormalities. The elements belonging to the third period are typical elements. A group of eight elements which includes sodium $ (Na) $ , magnesium $ (Mg) $ , aluminium $ (Al) $ , silicon $ (Si) $ , phosphorous $ (P) $ , sulfur $ (S) $ , chlorine $ (Cl) $ and argon $ (Ar) $ are typical elements.