$Mg$ and $Li$ are similar in their properties due to

In $s-$block,on moving down the group,the reactivity of metals with water and air increases. Which of the following factors has no significance for this trend of reactivity?

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:

Given below are two statements:
Statement-$I$: Along the period,the chemical reactivity of the elements gradually increases from group $1$ to group $18$.
Statement-$II$: The nature of oxides formed by group $1$ elements is basic,while that of group $17$ elements is acidic.
In the light of the above statements,choose the most appropriate answer from the options given below:

$Fe x_2$ and $Fe y_3$ are known when $x$ and $y$ are :

The most electropositive element possesses the electronic configuration