Question

sketch of unit cell and label the dimension ABC and angle alpha beta gamma how do cubic and tetragona system differ​

Answer 1

Answer:

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Answer 2

Answer:

A unit cell is the basic repeating unit of a crystal structure. The dimensions and angles of a unit cell are determined by the crystal system to which it belongs.

Here's a sketch of a unit cell, labeled with dimensions A, B, and C, as well as angles alpha, beta, and gamma:

A

_______

|\ \

| \ \

| \ \

C | \ \

| \ \

| \ \

| \ \

|_______\______\

B

alpha beta gamma

In a cubic system, all three axes have the same length (A = B = C), and all angles are 90 degrees (alpha = beta = gamma = 90 degrees). This gives the unit cell a cube shape.

In a tetragonal system, two of the axes have the same length (A = B), while the third axis (C) has a different length. All angles are still 90 degrees (alpha = beta = gamma = 90 degrees), but the unit cell has a rectangular prism shape.

So, the main difference between the cubic and tetragonal systems is the shape of the unit cell: a cube for cubic and a rectangular prism for tetragonal.