What is the total number of atoms per unit cell in a face centred cubic (fcc) structure ?

Explanation

To determine the total number of atoms per unit cell in a face-centered cubic (FCC) structure, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Unit Cell**:
- A unit cell is the smallest repeating unit in a crystal lattice that, when repeated in three-dimensional space, forms the entire crystal structure.

2. **Identify the Structure**:
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