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nordsb [41]
3 years ago
13

Aluminum has a face-centered cubic unit cell. How many atoms of Al are present in each unit cell

Chemistry
1 answer:
Serjik [45]3 years ago
7 0

Answer:4

Explanation:

As shown in the image attached, a face-centred cubic structure has 8 atoms at the corners and 6 face center atoms.

Each corner atom contributes to eight cell, so per unit cell 1/8 ×8 =1atom

Face center atoms contributes to two unit cells 1/2 × 6=3atoms

Total atoms =3+1=4atoms

Therefore the atoms in Al FCC per unit cell is 4

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