Potassium crystallizes in a body centred cubic lattice. How many unit cells are present in 2g potassium ? (At. Mass of K=39)

Explanation

To find out how many unit cells are present in 2 grams of potassium (K), which crystallizes in a body-centered cubic (BCC) lattice, we can follow these steps:

### Step-by-Step Solution:

1. **Determine the number of moles in 2 grams of potassium:**
\[ \text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
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