$6\mathrm{.}66$ Consider the following Lewis symbols for elements $x$ and $Y$ :

$(6\mathrm{.}1,6\mathrm{.}2,6\mathrm{.}5)$

$x^{}*,*Y^{}*$

a$.$ What are the group numbers of $x$ and $Y?$

b$.$ Will a compound of $x$ and $Y$ be ionic or molecular?

c$.$ What ions would be formed by $x$ and $Y?$

d$.$ What would be the formula of a compound of $x$ and $Y?$

e$.$ What would be the formula of a compound of $x$ and sulfur?

f$.$ What would be the formula of a compound of $Y$ and chlorine?

g$.$ Is the compound in part $f$ ionic or molecular?