Which of the following pairs of atomic numbers represents elements of the same group?

Among the given configurations,identify the element which does not belong to the same family as the others?

Which of the following oxides is different from the other three oxides?

Considering the elements $B$,$Al$,$Mg$,and $K$,the correct order of their metallic character is:
$(a)$ $B > Al > Mg > K$
$(b)$ $Al > Mg > B > K$
$(c)$ $Mg > Al > K > B$
$(d)$ $K > Mg > Al > B$

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 $X$,and $X$ belongs to the $16^{th}$ group and $3^{rd}$ period. Then,according to the given information,the incorrect statement regarding the given elements is:

Arrange the following acids in the decreasing order of their acidic strength: $ClOH \,(I), BrOH \,(II), IOH \,(III)$. Select the correct option.