Number of unit cells in 4g of X(atomic mass=40). Which crystallises in bcc pattern in `(N_(0)="Avogadro number")`

Options

A. `0.1 N_(A)`
B. `2xx0.1 N_(A)`
C. `(0.1N_(A))/(2)`
D. `2xxN_(A)`

Explanation

To find the number of unit cells in 4 g of element X that crystallizes in a body-centered cubic (BCC) pattern, we can follow these steps:

### Step 1: Calculate the number of moles of X
We can use the formula for calculating the number of moles:
\[ n = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
Given:
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