<span>Lithium and Sodium both have their last elections added to s subshells. All alkali and alkali earth metals have their last electrons placed in s subshells.</span>
I’m thinking it’s gold because lead isn’t with cooper meaning that if u switch lead with cooper it won’t work at all .
C. Sn (tin) is a metal, Si (silicon) is a metalloid, and C (carbon) is a nonmetal
It has 2 valence electrons
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Formation of a precipitate
