How many atoms are there in a cubic close-packed unit cell of platinum?
A)4
B)6
C)1
D)8
E)2

Name: How many atoms are there in a cubic close-packed unit cell of platinum? A)4 B)6 C)1 D)8 E)2
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In a cubic close-packed (ccp) structure, also known as face-centered cubic (fcc) structure, there are 4 atoms per unit cell. This includes 8 corner atoms, each of which is shared among 8 unit cells, and 6 face atoms, each shared between 2 unit cells, leading to a total of 4 atoms per unit cell.

How Many Atoms Are There in a Cubic Close-Packed Unit