Each of the following is a 10 g sample

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Each of the following is a 10 g sample. Which sample contains the least number of formula units? (a) LiF(s)\text{LiF}(s) (b) NaCl(s)\text{NaCl}(s) (c) Al2O3(s)\text{Al}_2\text{O}_3(s) (d) MgO(s)\text{MgO}(s)

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