Calculate the edge length of the unit cell of sodium chloride given density of NaCI is `2.17 xx 10^(3) kgm^(-3)` and molecular weight `58.5 xx 10^(-3)kg mol^(-1)`.

Explanation

To calculate the edge length of the unit cell of sodium chloride (NaCl), we will use the formula for density in relation to the unit cell parameters. The formula is:

\[ \text{Density} = \frac{Z \cdot M}{N_A \cdot a^3} \]

Where:
- \( Z \) = number of formula units per unit cell
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