Formula mass of `NaCl` is `58.45g mol^(-1)` and density of its pure form is `2.167g cm^(-3)`. The average distance between adjacent sodium and chloride ions in the crystal is `2.814xx10^(-8)cm`. Calculate Avogadro constant.

Explanation

To calculate Avogadro's constant using the given data for NaCl, we can follow these steps:

### Step 1: Understand the relationship between density, mass, and volume
The density (D) of a substance is given by the formula:
\[ D = \frac{m}{V} \]
where \( m \) is the mass and \( V \) is the volume.

### Step 2: Identify the number of formula units in the unit cell
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