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How many atoms constitute one unit cell ...

How many atoms constitute one unit cell of a face-centered cubic crystal ?

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Number of atoms in one face centered cubic unit cell can be determined from the number of contributed from the face and the corners of the unit cell as :
`(8" corners "xx1/8" atom per corner"=8xx1/8=1" atom")+6" faces"xx1/2" atom per unitface"=6xx1/2=3" atoms")`
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-Set -I
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