The Coordination Numbers in Cubic Close-Packed,body-Centered Cubic,and Primitive Cubic Structures

question 10

Multiple Choice

The coordination numbers in cubic close-packed,body-centered cubic,and primitive cubic structures are,respectively,

• A)12,8,and 12.
• B)12,8,and 4.
• C)8,12,and 6.
• D)12,6,and 6.
• E)12,8,and 6.

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Definitions:

Pupil

The opening in the center of the iris of the eye that adjusts size to control the amount of light reaching the retina.

Protective Covering

A layer or structure that serves to shield or guard an organism or part of an organism from harm or injury.

Eyeball

The spherical part of the eye that contains the optic structures and is responsible for vision.

Sclera

The white outer layer of the eyeball, providing protection and structure.