Question

Complete the Table

Group	Valency	Oxidation state	Symbol of ions	Chemical formula of oxides
$1^{st}$ group $\left[x\right]$	$1$	$+1$	-	$X_{2}O$
$2^{nd}$ group $\left[x\right]$	$2$	-	$y^{2+}$	-

Answer 1

Group	Valency	Oxidation state	Symbol of ions	Chemical formula of oxides
$1^{st}$ group $\left[x\right]$	$1$	$+1$	$X^{1+}$	$X_{2}O$
$2^{nd}$ group $\left[x\right]$	$2$	$+2$	$y^{2+}$	$YO$