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  • Need explanation for: Number of nearest neighbour and number of next nearest neighbour in FCC structure is -

Number of nearest neighbour and number of next nearest neighbour in FCC structure is -

  • Option 1)

    12,  6

  • Option 2)

    6,  12

  • Option 3)

    12,  12

  • Option 4)

    8,  12

 

Answers (1)

best_answer

Coordination number or number of nearest neighbour in FCC is 12 and number of next nearest neighbour is 6.

 

 

Coordination number -

Total number of atom touching a particular atom in the given unit cell is known as coordination number and that atoms are known as nearest neighbour.

- wherein

                Unit cell                      Coordination number

  1. Primitive                              6
  2. BCC                                    8
  3. FCC                                    12
  4. HCP                                    12

 

 


Option 1)

12,  6

This is correct

Option 2)

6,  12

This is incorrect

Option 3)

12,  12

This is incorrect

Option 4)

8,  12

This is incorrect

Posted by

prateek

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