Based on the provided periodic table segment,identify the incorrect statement.

Represent different types of periodic properties in the periodic table.

Which of the following statements are true?
$A.$ Unlike $Ga$ that has a very high melting point,$Cs$ has a very low melting point.
$B.$ On Pauling scale,the electronegativity values of $N$ and $Cl$ are not the same.
$C.$ $Ar$,$K^{+}$,$Cl^{-}$,$Ca^{2+}$,and $S^{2-}$ are all isoelectronic species.
$D.$ The correct order of the first ionization enthalpies of $Na$,$Mg$,$Al$,and $Si$ is $Si > Al > Mg > Na$.
$E.$ The atomic radius of $Cs$ is greater than that of $Li$ and $Rb$.
Choose the correct answer from the options given below

Match the items in List-$I$ with the items in List-$II$:

List-$I$	List-$II$
$(A)$ Rubidium	$(1)$ Germanium
$(B)$ Platinum	$(2)$ Radioactive chalcogen
$(C)$ Eka-silicon	$(3)$ $s$-block element
$(D)$ Polonium	$(4)$ Atomic number $78$

An element of atomic weight $40$ has $2, 8, 8, 2$ as the electronic configuration. Which one of the following statements regarding this element is not correct?

Consider the following four elements which are represented according to the long form of the periodic table. Here $W, Y$ and $Z$ are left,up and right elements with respect to the element $X$. $Y$ belongs to the $16^{th}$ group and $2^{nd}$ period. Then,according to the given information,identify the incorrect statement regarding the given elements.