Question #37a44

Dec 7, 2016

See below

Explanation:

I think the idea here may be to realize that since $N a C l$ or sodium chloride is an ionic compound, the formula given is not the molecular formula, but instead is the formula unit .

The formula unit is the simplest repeating unit within the crystal lattice of the ionic compound.

You could realize that $N {a}^{+}$ has one valence electron and that $C {l}^{-}$ has eight valence electron and draw a lewis dot structure:

$N a - C l$

realizing that the bond formed between them is ionic, and that the electron will be much closer to the species $C l$.

In fact, because of this, the species $N a C l$ readily dissolves in water, since the ion

$N {a}^{+}$ are attracted to ${\delta}^{-}$
and
$C {l}^{-}$ are attracted to ${\delta}^{+}$