Match List – $I$ with List – $II$

List – $I$ (Element, Atomic number)	List – $II$ (Position in periodic table)
$(a)$ $Ra$ – $88$	$(i)$ $4^{th}$ period, $13^{th}$ group
$(b)$ $Ga$ – $31$	(ii) $6^{th}$ period, $6^{th}$ group
$(c)$ $W$ – $74$	(iii) $5^{th}$ period, $10^{th}$ group
$(d)$ $Pd$ – $46$	(iv) $7^{th}$ period, $2^{nd}$ group

Consider the following elements arranged in a periodic table segment as shown in the image.
Which of the following is/are true about $A^{\prime}, B^{\prime}, C^{\prime}$ and $D^{\prime}$?
$A$. Order of atomic radii: $B^{\prime} < A^{\prime} < D^{\prime} < C^{\prime}$
$B$. Order of metallic character: $B^{\prime} < A^{\prime} < D^{\prime} < C^{\prime}$
$C$. Size of the element: $D^{\prime} < C^{\prime} < B^{\prime} < A^{\prime}$
$D$. Order of ionic radii: $B^{\prime+} < A^{\prime+} < D^{\prime+} < C^{\prime+}$
Choose the correct answer from the options given below:

Fill in the blanks given below:
$(i)$ The most widely used scale for measuring electronegativity is ........ .
$(ii)$ The similarity observed in periodic properties is known as .............. .
$(iii)$ The elements located in the middle of the periodic table form .......... type of oxides.

The cause of the diagonal relationship is:

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. $Al^{3+} < Mg^{2+} < Na^{+} < F^{-}$	$I$. Ionisation Enthalpy
$B$. $B < C < O < N$	$II$. Metallic character
$C$. $B < Al < Mg < K$	$III$. Electronegativity
$D$. $Si < P < S < Cl$	$IV$. Ionic radii

Choose the correct answer from the options given below:

Which of the following statements is $NOT$ correct?