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.
- SCC (simple-centered cubic unit cell)
- BCC (body-centered cubic unit cell)
- FCC (face-centered cubic unit cell)
In SCC, the atoms are arranged at the corners.
![Z=\frac{1}{8}\times 8=1](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B1%7D%7B8%7D%5Ctimes%208%3D1)
The number of atoms of unit cell = Z = 1
In BCC, the atoms are arranged at the corners and the body center.
![Z=\frac{1}{8}\times 8+1=2](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B1%7D%7B8%7D%5Ctimes%208%2B1%3D2)
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.
![Z=\frac{1}{8}\times 8+\frac{1}{2}\times 6=4](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B1%7D%7B8%7D%5Ctimes%208%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%206%3D4)
The number of atoms of unit cell = Z = 4
Thus, the name of given unit cell is, FCC (face-centered cubic unit cell)
I think kepler would be the one to best describe the motion of hte earth because he has a space telescope named after him
The answer is a since its a physical to chemical change