A unit of cell of sodium chloride has four formula units. The edge length of the unit cell is `0.564 nm`. What is the density of sodium chloride?

Explanation

To find the density of sodium chloride (NaCl) given the edge length of the unit cell and the number of formula units, we can follow these steps:

### Step 1: Convert the edge length to centimeters
The edge length of the unit cell is given as \(0.564 \, \text{nm}\). We need to convert this into centimeters.

\[ 0.564 \, \text{nm} = 0.564 \times 10^{-9} \, \text{m} = 0.564 \times 10^{-7} \, \text{cm} \]
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