Packing of $\mathrm{Na}^{+}$and $\mathrm{Cl}^{-}$ions in sodium chloride is depicted by the given fi

Question

Packing of $\mathrm{Na}^{+}$and $\mathrm{Cl}^{-}$ions in sodium chloride is depicted by the given figure. Choose the correct option regarding formula mass of sodium chloride.\

Professor PC Thomas Classes · Answer

(d) : Formula mass of $\mathrm{NaCl}=$ Atomic mass of $\mathrm{Na}+$ Atomic mass of $\mathrm{Cl}=23.0 \mathrm{u}+35.5 \mathrm{u}=58.5 \mathrm{u}$\