Question of 131
Q.The total number of atoms per unit cell of a face centred cubic crystal is :
(i) 01
(ii) 02
(iii) 03
(iv) 04
Odisha ChseOdisha CHSE +2 Science Board Exam 2018MCQ· 1mImportance★★★★★est
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Start your 14-day free trial to unlock the full solution →An FCC unit cell contains 4 atoms.
In a face-centred cubic lattice the atoms sit at two kinds of positions:
- Corner atoms: there are 8 corners, and each corner atom is shared among 8 neighbouring cells, so each contributes 1/8 to this cell. Total from corners = 8 x 1/8 = 1 atom. …
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