\(\begin{array}{l}{\rm{a) 2Li + }}{{\rm{O}}_2} \to {\rm{L}}{{\rm{i}}_{\rm{2}}}{\rm{O (lithium oxide)}}\\{\rm{b) 2Na + C}}{{\rm{l}}_2} \to {\rm{ 2NaCl (sodium chloride)}}\\{\rm{c) 2K + B}}{{\rm{r}}_2} \to {\rm{ 2KBr (potassium bromide)}}\end{array}\)
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