This is an incomplete question, the given sketch is shown below.
Answer : The name of given unit cell is, FCC (face-centered cubic unit cell)
Explanation :
Unit cell : It is defined as the smallest 3-dimensional portion of a complete space lattice which when repeated over the and again in different directions produces the complete space lattice.
There are three types of unit cell.
In SCC, the atoms are arranged at the corners.
[tex]Z=\frac{1}{8}\times 8=1[/tex]
The number of atoms of unit cell = Z = 1
In BCC, the atoms are arranged at the corners and the body center.
[tex]Z=\frac{1}{8}\times 8+1=2[/tex]
The number of atoms of unit cell = Z = 2
The given unit cell is, FCC because the atoms are arranged at the corners and the center of the 6 faces.
[tex]Z=\frac{1}{8}\times 8+\frac{1}{2}\times 6=4[/tex]
The number of atoms of unit cell = Z = 4
Thus, the name of given unit cell is, FCC (face-centered cubic unit cell)
