goformit100
  • goformit100
What is the coordination number of atoms : (a) in a cube closed-packed structure? (b) in a body-centered cubic structure?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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goformit100
  • goformit100
@aaronq
aaronq
  • aaronq
do you know what they look like?
goformit100
  • goformit100
yes I know @aaronq

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More answers

aaronq
  • aaronq
could you sketch them?
goformit100
  • goformit100
I think the answer of first is 6 and for the second is 8. Am I correct @aaronq ?
aaronq
  • aaronq
If i remember correctly, body centred cubic should be 4
goformit100
  • goformit100
How ?
aaronq
  • aaronq
sorry, NaCl is bcc it should be 6|dw:1378438030258:dw|
goformit100
  • goformit100
|dw:1378451145987:dw| its 6
goformit100
  • goformit100
@aaronq check if I am correct or not ?
aaronq
  • aaronq
yeah, it should be 6 not 8 :P
goformit100
  • goformit100
for first one it's 6 or foe Second ?
goformit100
  • goformit100
*for
aaronq
  • aaronq
okay, my memory is rusty and i don't remember the structures , take a look at this http://depts.washington.edu/chemcrs/bulkdisk/chem484A_spr06/notes_Slides_3_Crystal%20Structures%20of%20Metals_CHEM484Aspr06.pdf
goformit100
  • goformit100
Thanks Bro.
aaronq
  • aaronq
no problem heres a summary: The hexagonal closest packed (hcp) has a coordination number of 12 and contains 2 atoms per unit cell. The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell. The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell. The simple cubic has a coordination number of 6 and contains 1 atom per unit cell.
goformit100
  • goformit100
cubic closed-packed structure means which type of structure
aaronq
  • aaronq
cubic closed-packed is also face centred cubic
aaronq
  • aaronq

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