Question

the identical number of layers in cubic and hexagonal close packing are?

Answer 1

Answer:

the identical number of layers in cubic and hexagonal close packing are?

Three layers

Explanation:

Answer 2

The identical number of layers in cubic and hexagonal close packing are three.

Explanation :

Hexagonal close packing :-

• Hexagonal closed pack follow the ABAB pattern
• This gives a pattern of spheres which is repeated in alternate layers
• The first layer is exactly aligned to the third layers
• Second layer consists of tetrahedral voids which are covered by spheres of third layers.
• It is also called HCP structure.

Cubic closed packing :-

• Cubic closed packing follow the ABCABC pattern
• Third layer is placed on the second layer.
• Sphere of second layer covers the octahedral voids
• Spheres of third layer are not alligned with the first or second layer arrangements
• All this arrangements are called C type arrangement.
• It is called CCP structure.