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  • Number of nearest neighbour and number of next nearest neighbour in FCC structure is - Option: 1 12, 6 <div class='qna-option

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)

As we have learnt,

 

Mathematical Analysis of Cubic System -

Coordination Number (C. No.)

  • In Simple Cubic (SC)
  • In Face Centered Cubic (FCC)
  • In Body Centered Cubic (BCC)

-

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

I. Primitive                              6

II. BCC                                   8

III. FCC                                 12

IV. HCP                                 12 

Therefore, Option(1) is correct 

Posted by

Sumit Saini

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