# What are the elemental oxidation numbers in sodium chloride?

And thus we get oxidation numbers of $+ I$ and $- I$, for sodium ion and chloride ion respectively. Note that the original synthesis of $N a C l$ is certainly a redox equation:
$\stackrel{0}{N} a \left(s\right) + \frac{1}{2} \stackrel{0}{C} {l}_{2} \rightarrow \stackrel{+ I}{N} {a}^{+} \stackrel{- I}{C} {l}^{-} \left(s\right)$