Which group of the periodic table contains only metals?

In the periodic table,metallic character of the elements shows one of the following trends:

Three elements $X$,$Y$ and $Z$ are in the $3^{rd}$ period of the periodic table. The oxides of $X$,$Y$ and $Z$,respectively,are basic,amphoteric and acidic. The correct order of the atomic numbers of $X$,$Y$ and $Z$ is:

Match List-$I$ with List-$II$.

List-$I$ (Oxide)	List-$II$ (Nature)
$A. Cl_2O_7$	$I. Amphoteric$
$B. Na_2O$	$II. Basic$
$C. Al_2O_3$	$III. Neutral$
$D. N_2O$	$IV. Acidic$

Choose the correct answer from the options given below:

Match the oxide given in column $A$ with its property given in column $B$.

Column $A$	Column $B$
$(i) \; Na_{2}O$	$(a) \; Neutral$
$(ii) \; Al_{2}O_{3}$	$(b) \; Basic$
$(iii) \; N_{2}O$	$(c) \; Acidic$
$(iv) \; Cl_{2}O_{7}$	$(d) \; Amphoteric$

Which of the following options has all correct pairs?

Which of the following oxides is the most basic oxide?