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A metal has cubic close packed (ccp) arr...

A metal has cubic close packed (ccp) arrangement , the layer sequence of which is shown below :

A face diagonal passes through the centre of atom 4 and the centre (s) of which other atoms ?

A

1

B

2,5

C

8,12

D

9,10

Text Solution

Verified by Experts

The correct Answer is:
B,C,D
Z=0 forms the bottom layer , Z=a/2 forms second layer above it and Z =a forms the third layer. Atoms 5,6,7,8,9 and 14 are present at face centres. Atoms 1,2,3,4,10,11, 12 and 13 are present at the corners. Atoms 4,2,5 form one face diagonal , 4,9,10 form another face diagonal , 4,8,12 form one more face diagonal . Hence, correct options are b,c and d .
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