The number of octahedral void in bcc structure is:
(a)0
(b)1
(c)2
(d)4

Options

A. (a) 0
B. (b) 1
C. (c) 2
D. (d) 4

Answer

To determine the number of octahedral voids in a body-centered cubic (BCC) structure, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the BCC Structure**:
- A body-centered cubic (BCC) unit cell consists of atoms located at each of the eight corners of the cube and one atom at the center of the cube.

2. **Identifying Octahedral Voids**:
- An octahedral void is a space in the crystal lattice where an atom can fit, surrounded by six atoms. In a BCC structure, we need to analyze the arrangement of atoms to see if there are any regular octahedral voids.

3. **Counting Regular Octahedral Voids**:
- In a BCC unit cell, the arrangement does not allow for the formation of regular octahedral voids. The body-centered atom and the corner atoms do not create a symmetrical arrangement that defines a regular octahedral void.

4. **Distorted Octahedral Voids**:
- While there are some distorted octahedral voids present due to the geometry of the BCC structure, these are not counted as regular octahedral voids.

5. **Conclusion**:
- Since BCC does not have any regular octahedral voids, the number of octahedral voids in a BCC structure is **0**.

### Final Answer:
The number of octahedral voids in BCC structure is **0** (Option A).

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