Question

an atom is present in a special type of void surrounded by six neighbours in a solid having cubic close-packed (ccb) structure. what types of voids are they and why are they so named?
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Answer 1

Answer:

this type of packing is known as ABCABC packing

CCP i.e cubic closed packing is also known as FCC

examples of CCP are - Au , Ag , Cu

packing% of CCP is 74%

Explanation:

1st layer is vertically aligned with 4th layer ,

2nd layer is vertically aligned with 5th layer,

3rd layer is vertically aligned with 6th layer.