When heated above `916^(@)C`, iron changes, its crystal structure from body centred cubic to cubic closed packed structure. Assuming that the metallic radius of an atom does not change, calculate the ratio of the density of the bcc crystal to that of ccp crystal.

Explanation

To find the ratio of the density of the body-centered cubic (BCC) structure to the cubic close-packed (CCP) structure (which is equivalent to face-centered cubic, FCC), we will follow these steps:

### Step 1: Calculate the Density of BCC Structure

The formula for the density (\( \rho \)) of a crystal structure is given by:

\[
\rho = \frac{Z \cdot M}{N_A \cdot a^3}
...