The radius of the largest shpere which fits properly at the centre of the edge of a body centred cubic unit cell is : (Edge length is represented by 'a')

Options

A. 0.047 a
B. 0.027 a
C. 0.134 a
D. 0.067 a

Explanation

To find the radius of the largest sphere that fits properly at the center of the edge of a body-centered cubic (BCC) unit cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the BCC Structure**:
- In a body-centered cubic unit cell, there are 8 atoms located at the corners of the cube and 1 atom at the center of the cube.
- The edge length of the cube is denoted as 'a'.

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