The sum of valence electron in element with most and least metallic character among the following is ：
$\left. \frac { \mathrm { Na } ( \mathrm { P } , \mathrm { Cl } , \mathrm { S } , \mathrm { O } ) \text { and } ( \mathrm { F } ) } { \backslash \mid E \uparrow M \cdot C \downarrow } 7 \right\rvert \, E \int _ { - } ^ { ( 8 ) } e ^ { - }$donation $\uparrow$ metallic ch $\uparrow$