Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related to

If $X(OH) > Y(OH)$ (acidic strength) and $X$ and $Y$ both belong to the same group,then select the $CORRECT$ statement:

Explain the trends in physical and chemical reactivity of elements across a period and down a group.

In which of the following are the oxides of three elements $X, Y$ and $Z$ correctly arranged in the increasing order of acidic nature? The electronic configurations of $X, Y$ and $Z$ are $[Ne] 3s^2 3p^1$,$[Ne] 3s^2 3p^5$,and $[Ne] 3s^2$ respectively.

Which of the following is the most acidic?

Red hot carbon will remove oxygen from the oxides $XO$ and $YO$ but not from $ZO$. $Y$ will remove oxygen from $XO$. Use this evidence to deduce the order of activity of the three metals $X, Y$ and $Z$ putting the most active first.