Determine the number of atoms per unit cell in a (a) face-centered cubic, (b) body- centered cubic, and (c) diamond lattice.

a) 4 b) 2 c) 8

Explanation:

Each corner of the cube is shared by 8 different cells, therefore there is 1/8 of atom for each corner. Each face of the cube is shared by 2 different cells, therefore there is 1/2 of atom for each face. Finally, each atom inside the body is not shared by different cells.

a) For face-centered cubic we have 8 corner atoms and 6 face atoms:

b) For the body-centered cubic we have 8 corner atoms and 1 atom inside the body:

c) For diamond lattice we have 8 corner atoms, 6 face atoms and 4 atoms inside the body:

a sonic boom is a loud boom that breaks the sound barrier

explanation:

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015